]> git.karo-electronics.de Git - karo-tx-linux.git/log
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9 years agonet-timestamp: Fix a documentation typo
Andrew Lutomirski [Mon, 24 Nov 2014 20:02:29 +0000 (12:02 -0800)]
net-timestamp: Fix a documentation typo

SOF_TIMESTAMPING_OPT_ID puts the id in ee_data, not ee_info.

Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoInput: xpad - use proper endpoint type
Greg Kroah-Hartman [Tue, 25 Nov 2014 08:38:17 +0000 (00:38 -0800)]
Input: xpad - use proper endpoint type

The xpad wireless endpoint is not a bulk endpoint on my devices, but
rather an interrupt one, so the USB core complains when it is submitted.
I'm guessing that the author really did mean that this should be an
interrupt urb, but as there are a zillion different xpad devices out
there, let's cover out bases and handle both bulk and interrupt
endpoints just as easily.

Signed-off-by: "Pierre-Loup A. Griffais" <pgriffais@valvesoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
9 years agoInput: elantech - trust firmware about trackpoint presence
Dmitry Torokhov [Thu, 20 Nov 2014 07:33:07 +0000 (23:33 -0800)]
Input: elantech - trust firmware about trackpoint presence

Only try to parse data as coming from trackpoint if firmware told us that
trackpoint is present.

Fixes commit caeb0d37fa3e387eb0dd22e5d497523c002033d1

Reported-and-tested-by: Marcus Overhagen <marcus.overhagen@gmail.com>
Reported-and-tested-by: Anders Kaseorg <andersk@mit.edu>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
9 years agousb-quirks: Add reset-resume quirk for MS Wireless Laser Mouse 6000
Hans de Goede [Mon, 24 Nov 2014 10:22:38 +0000 (11:22 +0100)]
usb-quirks: Add reset-resume quirk for MS Wireless Laser Mouse 6000

This wireless mouse receiver needs a reset-resume quirk to properly come
out of reset.

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1165206
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agonet/ping: handle protocol mismatching scenario
Jane Zhou [Mon, 24 Nov 2014 19:44:08 +0000 (11:44 -0800)]
net/ping: handle protocol mismatching scenario

ping_lookup() may return a wrong sock if sk_buff's and sock's protocols
dont' match. For example, sk_buff's protocol is ETH_P_IPV6, but sock's
sk_family is AF_INET, in that case, if sk->sk_bound_dev_if is zero, a wrong
sock will be returned.
the fix is to "continue" the searching, if no matching, return NULL.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: netdev@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Jane Zhou <a17711@motorola.com>
Signed-off-by: Yiwei Zhao <gbjc64@motorola.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/smsc911x: Add minimal runtime PM support
Geert Uytterhoeven [Mon, 24 Nov 2014 18:58:17 +0000 (19:58 +0100)]
net/smsc911x: Add minimal runtime PM support

Add minimal runtime PM support (enable on probe, disable on remove), to
ensure proper operation with a parent device that uses runtime PM.

This is needed on systems where the external bus controller module of
the SoC is contained in a PM domain and/or has a gateable functional
clock. In such cases, before accessing any device connected to the
external bus, the PM domain must be powered up, and/or the functional
clock must be enabled, which is typically handled through runtime PM by
the bus controller driver.

An example of this is the kzm9g development board, where an smsc9220
Ethernet controller is connected to the Bus State Controller (BSC) of a
Renesas sh73a0 SoC.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: add tipc_netlink.h to uapi Kbuild
Richard Alpe [Mon, 24 Nov 2014 13:24:54 +0000 (14:24 +0100)]
tipc: add tipc_netlink.h to uapi Kbuild

tipc_netlink.h is the user-space header for the new netlink api. It
was accidentally left out of the uapi Kbuild list when the api was
added.

Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agorhashtable: Check for count mismatch while iterating in selftest
Thomas Graf [Mon, 24 Nov 2014 11:37:58 +0000 (12:37 +0100)]
rhashtable: Check for count mismatch while iterating in selftest

Verify whether both the lock and RCU protected iterators see all
test entries before and after expanding and shrinking has been
performed. Also verify whether the number of entries in the hashtable
remains stable during expansion and shrinking.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoaf_packet: fix sparse warning
Michael S. Tsirkin [Mon, 24 Nov 2014 11:32:16 +0000 (13:32 +0200)]
af_packet: fix sparse warning

af_packet produces lots of these:
net/packet/af_packet.c:384:39: warning: incorrect type in return expression (different modifiers)
net/packet/af_packet.c:384:39:    expected struct page [pure] *
net/packet/af_packet.c:384:39:    got struct page *

this seems to be because sparse does not realize that _pure
refers to function, not the returned pointer.

Tweak code slightly to avoid the warning.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoxen-netback: do not report success if backend_create_xenvif() fails
Alexey Khoroshilov [Mon, 24 Nov 2014 10:58:00 +0000 (13:58 +0300)]
xen-netback: do not report success if backend_create_xenvif() fails

If xenvif_alloc() or xenbus_scanf() fail in backend_create_xenvif(),
xenbus is left in offline mode but netback_probe() reports success.

The patch implements propagation of error code for backend_create_xenvif().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotc_vlan: fix type of tcfv_push_vid
Jiri Pirko [Mon, 24 Nov 2014 10:30:26 +0000 (11:30 +0100)]
tc_vlan: fix type of tcfv_push_vid

Should be u16. So fix it to kill the sparse warning.

Fixes: c7e2b9689ef8136 "sched: introduce vlan action"
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipv6: gre: fix wrong skb->protocol in WCCP
Yuri Chislov [Mon, 24 Nov 2014 10:25:15 +0000 (11:25 +0100)]
ipv6: gre: fix wrong skb->protocol in WCCP

When using GRE redirection in WCCP, it sets the wrong skb->protocol,
that is, ETH_P_IP instead of ETH_P_IPV6 for the encapuslated traffic.

Fixes: c12b395a4664 ("gre: Support GRE over IPv6")
Cc: Dmitry Kozlov <xeb@mail.ru>
Signed-off-by: Yuri Chislov <yuri.chislov@gmail.com>
Tested-by: Yuri Chislov <yuri.chislov@gmail.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: fix sparse warnings in new nl api
Richard Alpe [Mon, 24 Nov 2014 10:10:29 +0000 (11:10 +0100)]
tipc: fix sparse warnings in new nl api

Fix sparse warnings about non-static declaration of static functions
in the new tipc netlink API.

Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
David S. Miller [Mon, 24 Nov 2014 21:00:58 +0000 (16:00 -0500)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next

Pablo Neira Ayuso says:

====================
netfilter/ipvs updates for net-next

The following patchset contains Netfilter updates for your net-next
tree, this includes the NAT redirection support for nf_tables, the
cgroup support for nft meta and conntrack zone support for the connlimit
match. Coming after those, a bunch of sparse warning fixes, missing
netns bits and cleanups. More specifically, they are:

1) Prepare IPv4 and IPv6 NAT redirect code to use it from nf_tables,
   patches from Arturo Borrero.

2) Introduce the nf_tables redir expression, from Arturo Borrero.

3) Remove an unnecessary assignment in ip_vs_xmit/__ip_vs_get_out_rt().
   Patch from Alex Gartrell.

4) Add nft_log_dereference() macro to the nf_log infrastructure, patch
   from Marcelo Leitner.

5) Add some extra validation when registering logger families, also
   from Marcelo.

6) Some spelling cleanups from stephen hemminger.

7) Fix sparse warning in nf_logger_find_get().

8) Add cgroup support to nf_tables meta, patch from Ana Rey.

9) A Kconfig fix for the new redir expression and fix sparse warnings in
   the new redir expression.

10) Fix several sparse warnings in the netfilter tree, from
    Florian Westphal.

11) Reduce verbosity when OOM in nfnetlink_log. User can basically do
    nothing when this situation occurs.

12) Add conntrack zone support to xt_connlimit, again from Florian.

13) Add netnamespace support to the h323 conntrack helper, contributed
    by Vasily Averin.

14) Remove unnecessary nul-pointer checks before free_percpu() and
    module_put(), from Markus Elfring.

15) Use pr_fmt in nfnetlink_log, again patch from Marcelo Leitner.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipvlan: Initial check-in of the IPVLAN driver.
Mahesh Bandewar [Mon, 24 Nov 2014 07:07:46 +0000 (23:07 -0800)]
ipvlan: Initial check-in of the IPVLAN driver.

This driver is very similar to the macvlan driver except that it
uses L3 on the frame to determine the logical interface while
functioning as packet dispatcher. It inherits L2 of the master
device hence the packets on wire will have the same L2 for all
the packets originating from all virtual devices off of the same
master device.

This driver was developed keeping the namespace use-case in
mind. Hence most of the examples given here take that as the
base setup where main-device belongs to the default-ns and
virtual devices are assigned to the additional namespaces.

The device operates in two different modes and the difference
in these two modes in primarily in the TX side.

(a) L2 mode : In this mode, the device behaves as a L2 device.
TX processing upto L2 happens on the stack of the virtual device
associated with (namespace). Packets are switched after that
into the main device (default-ns) and queued for xmit.

RX processing is simple and all multicast, broadcast (if
applicable), and unicast belonging to the address(es) are
delivered to the virtual devices.

(b) L3 mode : In this mode, the device behaves like a L3 device.
TX processing upto L3 happens on the stack of the virtual device
associated with (namespace). Packets are switched to the
main-device (default-ns) for the L2 processing. Hence the routing
table of the default-ns will be used in this mode.

RX processins is somewhat similar to the L2 mode except that in
this mode only Unicast packets are delivered to the virtual device
while main-dev will handle all other packets.

The devices can be added using the "ip" command from the iproute2
package -

ip link add link <master> <virtual> type ipvlan mode [ l2 | l3 ]

Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Maciej Żenczykowski <maze@google.com>
Cc: Laurent Chavey <chavey@google.com>
Cc: Tim Hockin <thockin@google.com>
Cc: Brandon Philips <brandon.philips@coreos.com>
Cc: Pavel Emelianov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years ago8139too: The maximum MTU should allow for VLAN headers
Alban Bedel [Sun, 23 Nov 2014 12:07:54 +0000 (13:07 +0100)]
8139too: The maximum MTU should allow for VLAN headers

As pointed out by Ben Hutchings drivers that allow using VLAN have to
provide enough headroom for the VLAN tags.

Signed-off-by: Alban Bedel <albeu@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: fec: init maximum receive buffer size for ring1 and ring2
Nimrod Andy [Sun, 23 Nov 2014 09:23:06 +0000 (17:23 +0800)]
net: fec: init maximum receive buffer size for ring1 and ring2

i.MX6SX fec support three rx ring1, the current driver lost to init
ring1 and ring2 maximum receive buffer size, that cause receving
frame date length error. The driver reports "rcv is not +last" error
log in user case.

Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge tag 'iwlwifi-for-john-2014-11-23' of git://git.kernel.org/pub/scm/linux/kernel...
John W. Linville [Mon, 24 Nov 2014 18:53:41 +0000 (13:53 -0500)]
Merge tag 'iwlwifi-for-john-2014-11-23' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-fixes

Emmanuel Grumbach <egrumbach@gmail.com> says:

"Not all the firmware know how to handle the HOT_SPOT_CMD.
Make sure that the firmware will know this command before
sending it. This avoids a firmware crash."

Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agords: switch rds_message_copy_from_user() to iov_iter
Al Viro [Thu, 20 Nov 2014 14:31:08 +0000 (09:31 -0500)]
rds: switch rds_message_copy_from_user() to iov_iter

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agords: switch ->inc_copy_to_user() to passing iov_iter
Al Viro [Thu, 20 Nov 2014 14:21:14 +0000 (09:21 -0500)]
rds: switch ->inc_copy_to_user() to passing iov_iter

instances get considerably simpler from that...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years ago[atm] switch vcc_sendmsg() to copy_from_iter()
Al Viro [Thu, 20 Nov 2014 12:01:29 +0000 (07:01 -0500)]
[atm] switch vcc_sendmsg() to copy_from_iter()

... and make it handle multi-segment iovecs - deals with that
"fix this later" issue for free.  A bit of shame, really - it
had been there since 2.3.15pre3 when the whole thing went into the
tree, practically a historical artefact by now...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agovmci_transport: switch ->enqeue_dgram, ->enqueue_stream and ->dequeue_stream to msghdr
Al Viro [Thu, 20 Nov 2014 09:05:34 +0000 (04:05 -0500)]
vmci_transport: switch ->enqeue_dgram, ->enqueue_stream and ->dequeue_stream to msghdr

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agotipc_msg_build(): pass msghdr instead of its ->msg_iov
Al Viro [Sat, 15 Nov 2014 06:16:27 +0000 (01:16 -0500)]
tipc_msg_build(): pass msghdr instead of its ->msg_iov

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agotipc_sendmsg(): pass msghdr instead of its ->msg_iov
Al Viro [Sat, 15 Nov 2014 06:13:43 +0000 (01:13 -0500)]
tipc_sendmsg(): pass msghdr instead of its ->msg_iov

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agoswitch sctp_user_addto_chunk() and sctp_datamsg_from_user() to passing iov_iter
Al Viro [Sat, 15 Nov 2014 06:11:23 +0000 (01:11 -0500)]
switch sctp_user_addto_chunk() and sctp_datamsg_from_user() to passing iov_iter

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agoswitch AF_PACKET and AF_UNIX to skb_copy_datagram_from_iter()
Al Viro [Thu, 6 Nov 2014 06:10:59 +0000 (01:10 -0500)]
switch AF_PACKET and AF_UNIX to skb_copy_datagram_from_iter()

... and kill skb_copy_datagram_iovec()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agokill zerocopy_sg_from_iovec()
Al Viro [Thu, 6 Nov 2014 05:56:48 +0000 (00:56 -0500)]
kill zerocopy_sg_from_iovec()

no users left

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years ago{macvtap,tun}_get_user(): switch to iov_iter
Al Viro [Thu, 19 Jun 2014 19:36:49 +0000 (15:36 -0400)]
{macvtap,tun}_get_user(): switch to iov_iter

allows to switch macvtap and tun from ->aio_write() to ->write_iter()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agonew helpers: skb_copy_datagram_from_iter() and zerocopy_sg_from_iter()
Al Viro [Thu, 19 Jun 2014 18:15:22 +0000 (14:15 -0400)]
new helpers: skb_copy_datagram_from_iter() and zerocopy_sg_from_iter()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agoswitch macvtap to ->read_iter()
Al Viro [Fri, 7 Nov 2014 19:13:53 +0000 (14:13 -0500)]
switch macvtap to ->read_iter()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agoswitch drivers/net/tun.c to ->read_iter()
Al Viro [Fri, 7 Nov 2014 18:52:07 +0000 (13:52 -0500)]
switch drivers/net/tun.c to ->read_iter()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agonew helper: memcpy_to_msg()
Al Viro [Mon, 7 Apr 2014 01:51:23 +0000 (21:51 -0400)]
new helper: memcpy_to_msg()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agoswitch ipxrtr_route_packet() from iovec to msghdr
Al Viro [Mon, 7 Apr 2014 01:28:01 +0000 (21:28 -0400)]
switch ipxrtr_route_packet() from iovec to msghdr

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agonew helper: memcpy_from_msg()
Al Viro [Mon, 7 Apr 2014 01:25:44 +0000 (21:25 -0400)]
new helper: memcpy_from_msg()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agonew helper: skb_copy_and_csum_datagram_msg()
Al Viro [Sun, 6 Apr 2014 22:47:38 +0000 (18:47 -0400)]
new helper: skb_copy_and_csum_datagram_msg()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
9 years agoMIPS: Fix address type used for early memory detection.
Steven J. Hill [Thu, 13 Nov 2014 15:52:00 +0000 (09:52 -0600)]
MIPS: Fix address type used for early memory detection.

In 'early_parse_mem' the data type used for the start
and size of a memory region specified on the command line
is incorrect. If 64-bit addressing is used, the value
gets truncated.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8456/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: Kconfig: Don't allow both microMIPS and SmartMIPS to be selected.
Markos Chandras [Mon, 21 Jul 2014 07:46:14 +0000 (08:46 +0100)]
MIPS: Kconfig: Don't allow both microMIPS and SmartMIPS to be selected.

microMIPS and SmartMIPS can't be used together. This fixes the
following build problem:

Warning: the 32-bit microMIPS architecture does not support the `smartmips' extension
arch/mips/kernel/entry.S:90: Error: unrecognized opcode `mtlhx $24'
[...]
arch/mips/kernel/entry.S:109: Error: unrecognized opcode `mtlhx $24'

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7421/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: kernel: cps-vec: Set ISA level to mips32r2 for the MIPS MT ASE
Markos Chandras [Wed, 16 Jul 2014 07:53:39 +0000 (08:53 +0100)]
MIPS: kernel: cps-vec: Set ISA level to mips32r2 for the MIPS MT ASE

Fixes the following build warnings:
arch/mips/kernel/cps-vec.S: Assembler messages:
arch/mips/kernel/cps-vec.S:228: Warning: the `mt' extension requires
MIPS32 revision 2 or greater
[...]
arch/mips/kernel/cps-vec.S: Assembler messages:
arch/mips/kernel/cps-vec.S:345: Warning: the `mt' extension requires
MIPS32 revision 2 or greater

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: Paul Burton <Paul.Burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7355/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: Netlogic: handle modular AHCI builds
Florian Fainelli [Wed, 24 Sep 2014 17:55:11 +0000 (10:55 -0700)]
MIPS: Netlogic: handle modular AHCI builds

Commits a951440971d0 ("MIPS: Netlogic: Support for XLP3XX on-chip SATA")
and fedfcb1137d2 ("MIPS: Netlogic: XLP9XX on-chip SATA support") added
ahci-init and ahci-init-xlp2 as objects to build when CONFIG_SATA_AHCI
is enabled.

If CONFIG_SATA_AHCI is made modular, these two files will also get built
as modules (obj-m), which will result in the following linking failure:

ERROR: "nlm_set_pic_extra_ack" [arch/mips/netlogic/xlp/ahci-init.ko]
undefined!
ERROR: "nlm_io_base" [arch/mips/netlogic/xlp/ahci-init.ko] undefined!
ERROR: "nlm_nodes" [arch/mips/netlogic/xlp/ahci-init-xlp2.ko] undefined!
ERROR: "nlm_set_pic_extra_ack"
[arch/mips/netlogic/xlp/ahci-init-xlp2.ko] undefined!
ERROR: "xlp_socdev_to_node" [arch/mips/netlogic/xlp/ahci-init-xlp2.ko]
undefined!
ERROR: "nlm_io_base" [arch/mips/netlogic/xlp/ahci-init-xlp2.ko]
undefined!

Just check whether CONFIG_SATA_AHCI is defined for this build, and if
that is the case, add these objects to the list of built-in object
files.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: ganesanr@broadcom.com
Cc: jchandra@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/7855/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: Netlogic: handle modular USB case
Florian Fainelli [Wed, 24 Sep 2014 17:55:10 +0000 (10:55 -0700)]
MIPS: Netlogic: handle modular USB case

Commit 1004165f346a ("MIPS: Netlogic: USB support for XLP") and then
commit 9eac3591e78b ("MIPS: Netlogic: Add support for USB on XLP2xx")
added usb-init and usb-init-xlp2 as objects to build when CONFIG_USB is
enabled.

If CONFIG_USB is made modular, these two files will also get built as
modules (obj-m), which will result in the following linking failure:

ERROR: "nlm_io_base" [arch/mips/netlogic/xlp/usb-init.ko] undefined!
ERROR: "nlm_nodes" [arch/mips/netlogic/xlp/usb-init-xlp2.ko] undefined!
ERROR: "nlm_set_pic_extra_ack" [arch/mips/netlogic/xlp/usb-init-xlp2.ko]
undefined!
ERROR: "xlp_socdev_to_node" [arch/mips/netlogic/xlp/usb-init-xlp2.ko]
undefined!
ERROR: "nlm_io_base" [arch/mips/netlogic/xlp/usb-init-xlp2.ko]
undefined!

Just check whether CONFIG_USB is defined for this build, and if that is
the case, add these objects to the list of built-in object files.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: ganesanr@broadcom.com
Cc: jchandra@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/7854/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: Loongson: Make platform serial setup always built-in.
Aaro Koskinen [Wed, 19 Nov 2014 23:05:38 +0000 (01:05 +0200)]
MIPS: Loongson: Make platform serial setup always built-in.

If SERIAL_8250 is compiled as a module, the platform specific setup
for Loongson will be a module too, and it will not work very well.
At least on Loongson 3 it will trigger a build failure,
since loongson_sysconf is not exported to modules.

Fix by making the platform specific serial code always built-in.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Reported-by: Ralf Baechle <ralf@linux-mips.org>
Cc: stable@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Markos Chandras <Markos.Chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/8533/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: fix EVA & non-SMP non-FPU FP context signal handling
Paul Burton [Tue, 28 Oct 2014 11:25:51 +0000 (11:25 +0000)]
MIPS: fix EVA & non-SMP non-FPU FP context signal handling

The save_fp_context & restore_fp_context pointers were being assigned
to the wrong variables if either:

  - The kernel is configured for UP & runs on a system without an FPU,
    since b2ead5282885 "MIPS: Move & rename
    fpu_emulator_{save,restore}_context".

  - The kernel is configured for EVA, since ca750649e08c "MIPS: kernel:
    signal: Prevent save/restore FPU context in user memory".

This would lead to FP context being clobbered incorrectly when setting
up a sigcontext, then the garbage values being saved uselessly when
returning from the signal.

Fix by swapping the pointer assignments appropriately.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: stable@vger.kernel.org # v3.15+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8230/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: cpu-probe: Set the FTLB probability bit on supported cores
Markos Chandras [Mon, 10 Nov 2014 12:25:34 +0000 (12:25 +0000)]
MIPS: cpu-probe: Set the FTLB probability bit on supported cores

Make use of the Config6/FLTBP bit to set the probability of a TLBWR
instruction to hit the FTLB or the VTLB. A value of 0 (which may be
the default value on certain cores, such as proAptiv or P5600)
means that a TLBWR instruction will never hit the VTLB which
leads to performance limitations since it effectively decreases
the number of available TLB slots.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: <stable@vger.kernel.org> # v3.15+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8368/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: BMIPS: Fix ".previous without corresponding .section" warnings
Kevin Cernekee [Tue, 21 Oct 2014 04:27:51 +0000 (21:27 -0700)]
MIPS: BMIPS: Fix ".previous without corresponding .section" warnings

Commit 078a55fc824c1 ("Delete __cpuinit/__CPUINIT usage from MIPS code")
removed our __CPUINIT directives, so now the ".previous" directives
are superfluous.  Remove them.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: f.fainelli@gmail.com
Cc: mbizon@freebox.fr
Cc: jogo@openwrt.org
Cc: jfraser@broadcom.com
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/8156/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: uaccess.h: Fix strnlen_user comment.
Ralf Baechle [Tue, 4 Nov 2014 01:23:45 +0000 (02:23 +0100)]
MIPS: uaccess.h: Fix strnlen_user comment.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: r4kcache: Add EVA case for protected_writeback_dcache_line
Markos Chandras [Wed, 5 Nov 2014 08:25:37 +0000 (08:25 +0000)]
MIPS: r4kcache: Add EVA case for protected_writeback_dcache_line

Commit de8974e3f76c0 ("MIPS: asm: r4kcache: Add EVA cache flushing
functions") added cache function for EVA using the cachee instruction.
However, it didn't add a case for the protected_writeback_dcache_line.
mips_dsemul() calls r4k_flush_cache_sigtramp() which in turn uses
the protected_writeback_dcache_line() to flush the trampoline code
back to memory. This used the wrong "cache" instruction leading to
random userland crashes on non-FPU cores.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: <stable@vger.kernel.org> # v3.15+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8331/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: Fix info about plat_setup in arch_mem_init comment
Rafał Miłecki [Wed, 3 Sep 2014 05:36:51 +0000 (07:36 +0200)]
MIPS: Fix info about plat_setup in arch_mem_init comment

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7607/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: rtlx: Remove KERN_DEBUG from pr_debug() arguments in rtlx.c
Masanari Iida [Tue, 7 Oct 2014 03:57:45 +0000 (12:57 +0900)]
MIPS: rtlx: Remove KERN_DEBUG from pr_debug() arguments in rtlx.c

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7938/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: SEAD3: Fix LED device registration.
Ralf Baechle [Thu, 23 Oct 2014 22:41:45 +0000 (00:41 +0200)]
MIPS: SEAD3: Fix LED device registration.

This isn't a module and shouldn't be one.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8202/

9 years agoMIPS: Fix a copy & paste error in unistd.h
Huacai Chen [Wed, 12 Nov 2014 05:47:14 +0000 (13:47 +0800)]
MIPS: Fix a copy & paste error in unistd.h

Commit 5df4c8dbbc (MIPS: Wire up bpf syscall.) break the N32 build
because of a copy & paste error.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/8390/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agopowerpc/pci: Remove unused force_32bit_msi quirk
Benjamin Herrenschmidt [Tue, 7 Oct 2014 05:13:34 +0000 (16:13 +1100)]
powerpc/pci: Remove unused force_32bit_msi quirk

This is now fully replaced with the generic "no_64bit_msi" one
that is set by the respective drivers directly.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
9 years agopowerpc/pseries: Honor the generic "no_64bit_msi" flag
Benjamin Herrenschmidt [Tue, 7 Oct 2014 05:12:55 +0000 (16:12 +1100)]
powerpc/pseries: Honor the generic "no_64bit_msi" flag

Instead of the arch specific quirk which we are deprecating

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org>
9 years agopowerpc/powernv: Honor the generic "no_64bit_msi" flag
Benjamin Herrenschmidt [Tue, 7 Oct 2014 05:12:36 +0000 (16:12 +1100)]
powerpc/powernv: Honor the generic "no_64bit_msi" flag

Instead of the arch specific quirk which we are deprecating
and that drivers don't understand.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org>
9 years agosound/radeon: Move 64-bit MSI quirk from arch to driver
Benjamin Herrenschmidt [Mon, 24 Nov 2014 03:17:08 +0000 (14:17 +1100)]
sound/radeon: Move 64-bit MSI quirk from arch to driver

A number of radeon cards have a HW limitation causing them to be
unable to generate the full 64-bit of address bits for MSIs. This
breaks MSIs on some platforms such as POWER machines.

We used to have a powerpc specific quirk to address that on a
single card, but this doesn't scale very well, this is better
put under control of the drivers who know precisely what a given
HW revision can do.

We now have a generic quirk in the PCI code. We should set it
appropriately for all radeon's from the audio driver.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
CC: <stable@vger.kernel.org>
9 years agogpu/radeon: Set flag to indicate broken 64-bit MSI
Benjamin Herrenschmidt [Fri, 3 Oct 2014 05:18:59 +0000 (15:18 +1000)]
gpu/radeon: Set flag to indicate broken 64-bit MSI

Some radeon ASICs don't support all 64 address bits of MSIs despite
advertising support for 64-bit MSIs in their configuration space.

This breaks on systems such as IBM POWER7/8, where 64-bit MSIs can
be assigned with some of the high address bits set.

This makes use of the newly introduced "no_64bit_msi" flag in structure
pci_dev to allow the MSI allocation code to fallback to 32-bit MSIs
on those adapters.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
CC: <stable@vger.kernel.org>
---

Adding Alex's review tag. Patch to the driver is identical to the
reviewed one, I dropped the arch/powerpc hunk rewrote the subject
and cset comment.

9 years agoPCI/MSI: Add device flag indicating that 64-bit MSIs don't work
Benjamin Herrenschmidt [Fri, 3 Oct 2014 05:13:24 +0000 (15:13 +1000)]
PCI/MSI: Add device flag indicating that 64-bit MSIs don't work

This can be set by quirks/drivers to be used by the architecture code
that assigns the MSI addresses.

We additionally add verification in the core MSI code that the values
assigned by the architecture do satisfy the limitation in order to fail
gracefully if they don't (ie. the arch hasn't been updated to deal with
that quirk yet).

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
9 years agoALSA: hda - Limit 40bit DMA for AMD HDMI controllers
Takashi Iwai [Wed, 1 Oct 2014 08:30:53 +0000 (10:30 +0200)]
ALSA: hda - Limit 40bit DMA for AMD HDMI controllers

AMD/ATI HDMI controller chip models, we already have a filter to lower
to 32bit DMA, but the rest are supposed to be working with 64bit
although the hardware doesn't really work with 63bit but only with 40
or 48bit DMA.  In this patch, we take 40bit DMA for safety for the
AMD/ATI controllers as the graphics drivers does.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org>
9 years agoip_tunnel: the lack of vti_link_ops' dellink() cause kernel panic
lucien [Sun, 23 Nov 2014 07:04:11 +0000 (15:04 +0800)]
ip_tunnel: the lack of vti_link_ops' dellink() cause kernel panic

Now the vti_link_ops do not point the .dellink, for fb tunnel device
(ip_vti0), the net_device will be removed as the default .dellink is
unregister_netdevice_queue,but the tunnel still in the tunnel list,
then if we add a new vti tunnel, in ip_tunnel_find():

        hlist_for_each_entry_rcu(t, head, hash_node) {
                if (local == t->parms.iph.saddr &&
                    remote == t->parms.iph.daddr &&
                    link == t->parms.link &&
==>                 type == t->dev->type &&
                    ip_tunnel_key_match(&t->parms, flags, key))
                        break;
        }

the panic will happen, cause dev of ip_tunnel *t is null:
[ 3835.072977] IP: [<ffffffffa04103fd>] ip_tunnel_find+0x9d/0xc0 [ip_tunnel]
[ 3835.073008] PGD b2c21067 PUD b7277067 PMD 0
[ 3835.073008] Oops: 0000 [#1] SMP
.....
[ 3835.073008] Stack:
[ 3835.073008]  ffff8800b72d77f0 ffffffffa0411924 ffff8800bb956000 ffff8800b72d78e0
[ 3835.073008]  ffff8800b72d78a0 0000000000000000 ffffffffa040d100 ffff8800b72d7858
[ 3835.073008]  ffffffffa040b2e3 0000000000000000 0000000000000000 0000000000000000
[ 3835.073008] Call Trace:
[ 3835.073008]  [<ffffffffa0411924>] ip_tunnel_newlink+0x64/0x160 [ip_tunnel]
[ 3835.073008]  [<ffffffffa040b2e3>] vti_newlink+0x43/0x70 [ip_vti]
[ 3835.073008]  [<ffffffff8150d4da>] rtnl_newlink+0x4fa/0x5f0
[ 3835.073008]  [<ffffffff812f68bb>] ? nla_strlcpy+0x5b/0x70
[ 3835.073008]  [<ffffffff81508fb0>] ? rtnl_link_ops_get+0x40/0x60
[ 3835.073008]  [<ffffffff8150d11f>] ? rtnl_newlink+0x13f/0x5f0
[ 3835.073008]  [<ffffffff81509cf4>] rtnetlink_rcv_msg+0xa4/0x270
[ 3835.073008]  [<ffffffff8126adf5>] ? sock_has_perm+0x75/0x90
[ 3835.073008]  [<ffffffff81509c50>] ? rtnetlink_rcv+0x30/0x30
[ 3835.073008]  [<ffffffff81529e39>] netlink_rcv_skb+0xa9/0xc0
[ 3835.073008]  [<ffffffff81509c48>] rtnetlink_rcv+0x28/0x30
....

modprobe ip_vti
ip link del ip_vti0 type vti
ip link add ip_vti0 type vti
rmmod ip_vti

do that one or more times, kernel will panic.

fix it by assigning ip_tunnel_dellink to vti_link_ops' dellink, in
which we skip the unregister of fb tunnel device. do the same on ip6_vti.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoenic: use netdev_rss_key_fill() helper
Eric Dumazet [Sun, 23 Nov 2014 20:27:41 +0000 (12:27 -0800)]
enic: use netdev_rss_key_fill() helper

Use of well known RSS key might increase attack surface.

Switch to a random one, using generic helper so that all
ports share a common key.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Christian Benvenuti <benve@cisco.com>
Cc: Govindarajulu Varadarajan <_govind@gmx.com>
Cc: Sujith Sankar <ssujith@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipv6: coding style improvements (remove assignment in if statements)
Ian Morris [Sun, 23 Nov 2014 21:28:43 +0000 (21:28 +0000)]
ipv6: coding style improvements (remove assignment in if statements)

This change has no functional impact and simply addresses some coding
style issues detected by checkpatch. Specifically this change
adjusts "if" statements which also include the assignment of a
variable.

No changes to the resultant object files result as determined by objdiff.

Signed-off-by: Ian Morris <ipm@chirality.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoLinux 3.18-rc6 v3.18-rc6
Linus Torvalds [Sun, 23 Nov 2014 23:25:20 +0000 (15:25 -0800)]
Linux 3.18-rc6

9 years agouprobes, x86: Fix _TIF_UPROBE vs _TIF_NOTIFY_RESUME
Andy Lutomirski [Fri, 21 Nov 2014 21:26:07 +0000 (13:26 -0800)]
uprobes, x86: Fix _TIF_UPROBE vs _TIF_NOTIFY_RESUME

x86 call do_notify_resume on paranoid returns if TIF_UPROBE is set but
not on non-paranoid returns.  I suspect that this is a mistake and that
the code only works because int3 is paranoid.

Setting _TIF_NOTIFY_RESUME in the uprobe code was probably a workaround
for the x86 bug.  With that bug fixed, we can remove _TIF_NOTIFY_RESUME
from the uprobes code.

Reported-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agosched: Provide update_curr callbacks for stop/idle scheduling classes
Thomas Gleixner [Sun, 23 Nov 2014 22:04:52 +0000 (23:04 +0100)]
sched: Provide update_curr callbacks for stop/idle scheduling classes

Chris bisected a NULL pointer deference in task_sched_runtime() to
commit 6e998916dfe3 'sched/cputime: Fix clock_nanosleep()/clock_gettime()
inconsistency'.

Chris observed crashes in atop or other /proc walking programs when he
started fork bombs on his machine.  He assumed that this is a new exit
race, but that does not make any sense when looking at that commit.

What's interesting is that, the commit provides update_curr callbacks
for all scheduling classes except stop_task and idle_task.

While nothing can ever hit that via the clock_nanosleep() and
clock_gettime() interfaces, which have been the target of the commit in
question, the author obviously forgot that there are other code paths
which invoke task_sched_runtime()

do_task_stat(()
 thread_group_cputime_adjusted()
   thread_group_cputime()
     task_cputime()
       task_sched_runtime()
        if (task_current(rq, p) && task_on_rq_queued(p)) {
          update_rq_clock(rq);
          up->sched_class->update_curr(rq);
        }

If the stats are read for a stomp machine task, aka 'migration/N' and
that task is current on its cpu, this will happily call the NULL pointer
of stop_task->update_curr.  Ooops.

Chris observation that this happens faster when he runs the fork bomb
makes sense as the fork bomb will kick migration threads more often so
the probability to hit the issue will increase.

Add the missing update_curr callbacks to the scheduler classes stop_task
and idle_task.  While idle tasks cannot be monitored via /proc we have
other means to hit the idle case.

Fixes: 6e998916dfe3 'sched/cputime: Fix clock_nanosleep()/clock_gettime() inconsistency'
Reported-by: Chris Mason <clm@fb.com>
Reported-and-tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoMerge branch 'x86-traps' (trap handling from Andy Lutomirski)
Linus Torvalds [Sun, 23 Nov 2014 21:56:55 +0000 (13:56 -0800)]
Merge branch 'x86-traps' (trap handling from Andy Lutomirski)

Merge x86-64 iret fixes from Andy Lutomirski:
 "This addresses the following issues:

   - an unrecoverable double-fault triggerable with modify_ldt.
   - invalid stack usage in espfix64 failed IRET recovery from IST
     context.
   - invalid stack usage in non-espfix64 failed IRET recovery from IST
     context.

  It also makes a good but IMO scary change: non-espfix64 failed IRET
  will now report the correct error.  Hopefully nothing depended on the
  old incorrect behavior, but maybe Wine will get confused in some
  obscure corner case"

* emailed patches from Andy Lutomirski <luto@amacapital.net>:
  x86_64, traps: Rework bad_iret
  x86_64, traps: Stop using IST for #SS
  x86_64, traps: Fix the espfix64 #DF fixup and rewrite it in C

9 years agox86_64, traps: Rework bad_iret
Andy Lutomirski [Sun, 23 Nov 2014 02:00:33 +0000 (18:00 -0800)]
x86_64, traps: Rework bad_iret

It's possible for iretq to userspace to fail.  This can happen because
of a bad CS, SS, or RIP.

Historically, we've handled it by fixing up an exception from iretq to
land at bad_iret, which pretends that the failed iret frame was really
the hardware part of #GP(0) from userspace.  To make this work, there's
an extra fixup to fudge the gs base into a usable state.

This is suboptimal because it loses the original exception.  It's also
buggy because there's no guarantee that we were on the kernel stack to
begin with.  For example, if the failing iret happened on return from an
NMI, then we'll end up executing general_protection on the NMI stack.
This is bad for several reasons, the most immediate of which is that
general_protection, as a non-paranoid idtentry, will try to deliver
signals and/or schedule from the wrong stack.

This patch throws out bad_iret entirely.  As a replacement, it augments
the existing swapgs fudge into a full-blown iret fixup, mostly written
in C.  It's should be clearer and more correct.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agox86_64, traps: Stop using IST for #SS
Andy Lutomirski [Sun, 23 Nov 2014 02:00:32 +0000 (18:00 -0800)]
x86_64, traps: Stop using IST for #SS

On a 32-bit kernel, this has no effect, since there are no IST stacks.

On a 64-bit kernel, #SS can only happen in user code, on a failed iret
to user space, a canonical violation on access via RSP or RBP, or a
genuine stack segment violation in 32-bit kernel code.  The first two
cases don't need IST, and the latter two cases are unlikely fatal bugs,
and promoting them to double faults would be fine.

This fixes a bug in which the espfix64 code mishandles a stack segment
violation.

This saves 4k of memory per CPU and a tiny bit of code.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agox86_64, traps: Fix the espfix64 #DF fixup and rewrite it in C
Andy Lutomirski [Sun, 23 Nov 2014 02:00:31 +0000 (18:00 -0800)]
x86_64, traps: Fix the espfix64 #DF fixup and rewrite it in C

There's nothing special enough about the espfix64 double fault fixup to
justify writing it in assembly.  Move it to C.

This also fixes a bug: if the double fault came from an IST stack, the
old asm code would return to a partially uninitialized stack frame.

Fixes: 3891a04aafd668686239349ea58f3314ea2af86b
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoiwlwifi: mvm: check TLV flag before trying to use hotspot firmware commands
Luciano Coelho [Tue, 21 Oct 2014 13:12:18 +0000 (16:12 +0300)]
iwlwifi: mvm: check TLV flag before trying to use hotspot firmware commands

Older firmwares do not provide support for the HOT_SPOT_CMD command.
Check for the appropriate TLV flag that declares hotspot support in
the firmware to prevent a firmware assertion failure that can be
triggered from the userspace,

Cc: stable@vger.kernel.org [3.17+]
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoMerge tag 'armsoc-for-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Sun, 23 Nov 2014 19:46:01 +0000 (11:46 -0800)]
Merge tag 'armsoc-for-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A collection of fixes this week:

   - A set of clock fixes for shmobile platforms
   - A fix for tegra that moves serial port labels to be per board.
     We're choosing to merge this for 3.18 because the labels will start
     being parsed in 3.19, and without this change serial port numbers
     that used to be stable since the dawn of time will change numbers.
   - A few other DT tweaks for Tegra.
   - A fix for multi_v7_defconfig that makes it stop spewing cpufreq
     errors on Arndale (Exynos)"

* tag 'armsoc-for-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: multi_v7_defconfig: fix failure setting CPU voltage by enabling dependent I2C controller
  ARM: tegra: roth: Fix SD card VDD_IO regulator
  ARM: tegra: Remove eMMC vmmc property for roth/tn7
  ARM: dts: tegra: move serial aliases to per-board
  ARM: tegra: Add serial port labels to Tegra124 DT
  ARM: shmobile: kzm9g legacy: Set i2c clks_per_count to 2
  ARM: shmobile: r8a7740 dtsi: Correct IIC0 parent clock
  ARM: shmobile: r8a7790: Fix SD3CKCR address to device tree
  ARM: shmobile: r8a7740 legacy: Correct IIC0 parent clock
  ARM: shmobile: r8a7740 legacy: Add missing INTCA clock for irqpin module
  ARM: shmobile: r8a7790: Fix SD3CKCR address
  ARM: dts: sun6i: Re-parent ahb1_mux to pll6 as required by dma controller

9 years agoMerge branch 'for-3.18-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Sun, 23 Nov 2014 19:33:49 +0000 (11:33 -0800)]
Merge branch 'for-3.18-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

Pull percpu fix from Tejun Heo:
 "This contains one patch to fix a race condition which can lead to
  percpu_ref using a percpu pointer which is corrupted with a set DEAD
  bit.  The bug was introduced while separating out the ATOMIC mode flag
  from the DEAD flag.  The fix is pretty straight forward.

  I just committed the patch to the percpu tree but am sending out the
  pull request early as I'll be on vacation for a week.  The patch
  should be fairly safe and while the latency will be higher I'll be
  checking emails"

* 'for-3.18-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  percpu-ref: fix DEAD flag contamination of percpu pointer

9 years agoenic: use spin_lock(wq_lock) instead of spin_lock_irqsave(wq_lock)
Govindarajulu Varadarajan [Sat, 22 Nov 2014 19:52:52 +0000 (01:22 +0530)]
enic: use spin_lock(wq_lock) instead of spin_lock_irqsave(wq_lock)

All the access to wq has been moved out of hardirq context. We no longer need to
use spin_lock_irqsave.

Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoenic: use napi_schedule_irqoff()
Govindarajulu Varadarajan [Sat, 22 Nov 2014 19:52:51 +0000 (01:22 +0530)]
enic: use napi_schedule_irqoff()

enic_isr_legacy(), enic_isr_msix() & enic_isr_msi() run from hard
interrupt context.

They can use napi_schedule_irqoff() instead of napi_schedule()

Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agosolos-pci: fix error return code
Julia Lawall [Sat, 22 Nov 2014 14:39:17 +0000 (15:39 +0100)]
solos-pci: fix error return code

Return a negative error code on failure.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoigb: Fixes needed for surprise removal support
Carolyn Wyborny [Sat, 22 Nov 2014 07:52:54 +0000 (23:52 -0800)]
igb: Fixes needed for surprise removal support

This patch adds some checks in order to prevent panic's on surprise
removal of devices during S0, S3, S4.  Without this patch, Thunderbolt
type device removal will panic the system.

Signed-off-by: Yanir Lubetkin <yanirx.lubetkin@intel.com>
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoixgbe: fix use after free adapter->state test in ixgbe_remove/ixgbe_probe
Daniel Borkmann [Sat, 22 Nov 2014 07:52:53 +0000 (23:52 -0800)]
ixgbe: fix use after free adapter->state test in ixgbe_remove/ixgbe_probe

While working on a different issue, I noticed an annoying use
after free bug on my machine when unloading the ixgbe driver:

[ 8642.318797] ixgbe 0000:02:00.1: removed PHC on p2p2
[ 8642.742716] ixgbe 0000:02:00.1: complete
[ 8642.743784] BUG: unable to handle kernel paging request at ffff8807d3740a90
[ 8642.744828] IP: [<ffffffffa01c77dc>] ixgbe_remove+0xfc/0x1b0 [ixgbe]
[ 8642.745886] PGD 20c6067 PUD 81c1f6067 PMD 81c15a067 PTE 80000007d3740060
[ 8642.746956] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC
[ 8642.748039] Modules linked in: [...]
[ 8642.752929] CPU: 1 PID: 1225 Comm: rmmod Not tainted 3.18.0-rc2+ #49
[ 8642.754203] Hardware name: Supermicro X10SLM-F/X10SLM-F, BIOS 1.1b 11/01/2013
[ 8642.755505] task: ffff8807e34d3fe0 ti: ffff8807b7204000 task.ti: ffff8807b7204000
[ 8642.756831] RIP: 0010:[<ffffffffa01c77dc>]  [<ffffffffa01c77dc>] ixgbe_remove+0xfc/0x1b0 [ixgbe]
[...]
[ 8642.774335] Stack:
[ 8642.775805]  ffff8807ee824098 ffff8807ee824098 ffffffffa01f3000 ffff8807ee824000
[ 8642.777326]  ffff8807b7207e18 ffffffff8137720f ffff8807ee824098 ffff8807ee824098
[ 8642.778848]  ffffffffa01f3068 ffff8807ee8240f8 ffff8807b7207e38 ffffffff8144180f
[ 8642.780365] Call Trace:
[ 8642.781869]  [<ffffffff8137720f>] pci_device_remove+0x3f/0xc0
[ 8642.783395]  [<ffffffff8144180f>] __device_release_driver+0x7f/0xf0
[ 8642.784876]  [<ffffffff814421f8>] driver_detach+0xb8/0xc0
[ 8642.786352]  [<ffffffff814414a9>] bus_remove_driver+0x59/0xe0
[ 8642.787783]  [<ffffffff814429d0>] driver_unregister+0x30/0x70
[ 8642.789202]  [<ffffffff81375c65>] pci_unregister_driver+0x25/0xa0
[ 8642.790657]  [<ffffffffa01eb38e>] ixgbe_exit_module+0x1c/0xc8e [ixgbe]
[ 8642.792064]  [<ffffffff810f93a2>] SyS_delete_module+0x132/0x1c0
[ 8642.793450]  [<ffffffff81012c61>] ? do_notify_resume+0x61/0xa0
[ 8642.794837]  [<ffffffff816d2029>] system_call_fastpath+0x12/0x17

The issue is that test_and_set_bit() done on adapter->state is being
performed *after* the netdevice has been freed via free_netdev().

When netdev is being allocated on initialization time, it allocates
a private area, here struct ixgbe_adapter, that resides after the
net_device structure. In ixgbe_probe(), the device init routine,
we set up the adapter after alloc_etherdev_mq() on the private area
and add a reference for the pci_dev as well via pci_set_drvdata().

Both in the error path of ixgbe_probe(), but also on module unload
when ixgbe_remove() is being called, commit 41c62843eb6a ("ixgbe:
Fix rcu warnings induced by LER") accesses adapter after free_netdev().
The patch stores the result in a bool and thus fixes above oops on my
side.

Fixes: 41c62843eb6a ("ixgbe: Fix rcu warnings induced by LER")
Cc: stable <stable@vger.kernel.org>
Cc: Mark Rustad <mark.d.rustad@intel.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoixgbe: Correctly disable VLAN filter in promiscuous mode
Vlad Yasevich [Sat, 22 Nov 2014 07:52:52 +0000 (23:52 -0800)]
ixgbe: Correctly disable VLAN filter in promiscuous mode

IXGBE adapter seems to require that VLAN filtering be enabled if
VMDQ or SRIOV are enabled.  When those functions are disabled,
VLAN filtering may be disabled in promiscuous mode.

Prior to commit a9b8943ee129 ("ixgbe: remove vlan_filter_disable
and enable functions")

The logic was correct.  However, after the commit the logic
got reversed and VLAN filtered in now turned on when VMDQ/SRIOV
is disabled.

This patch changes the condition to enable hw vlan filtered
when VMDQ or SRIOV is enabled.

Fixes: a9b8943ee129 ("ixgbe: remove vlan_filter_disable and enable functions")
Cc: stable <stable@vger.kernel.org>
CC: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Acked-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipv6: Do not treat a GSO_TCPV4 request from UDP tunnel over IPv6 as invalid
Alexander Duyck [Sat, 22 Nov 2014 03:37:09 +0000 (19:37 -0800)]
ipv6: Do not treat a GSO_TCPV4 request from UDP tunnel over IPv6 as invalid

This patch adds SKB_GSO_TCPV4 to the list of supported GSO types handled by
the IPv6 GSO offloads.  Without this change VXLAN tunnels running over IPv6
do not currently handle IPv4 TCP TSO requests correctly and end up handing
the non-segmented frame off to the device.

Below is the before and after for a simple netperf TCP_STREAM test between
two endpoints tunneling IPv4 over a VXLAN tunnel running on IPv6 on top of
a 1Gb/s network adapter.

Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

 87380  16384  16384    10.29       0.88      Before
 87380  16384  16384    10.03     895.69      After

Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Sun, 23 Nov 2014 19:16:36 +0000 (11:16 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

Pull btrfs deadlock fix from Chris Mason:
 "This has a fix for a long standing deadlock that we've been trying to
  nail down for a while.  It ended up being a bad interaction with the
  fair reader/writer locks and the order btrfs reacquires locks in the
  btree"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  btrfs: fix lockups from btrfs_clear_path_blocking

9 years agomlx4: fix mlx4_en_set_rxfh()
Eric Dumazet [Sun, 23 Nov 2014 01:24:19 +0000 (17:24 -0800)]
mlx4: fix mlx4_en_set_rxfh()

mlx4_en_set_rxfh() can crash if no RSS indir table is provided.

While we are at it, allow RSS key to be changed with ethtool -X

Tested:

myhost:~# cat /proc/sys/net/core/netdev_rss_key
b6:89:91:f3:b2:c3:c2:90:11:e8:ce:45:e8:a9:9d:1c:f2:f6:d4:53:61:8b:26:3a:b3:9a:57:97:c3:b6:79:4d:2e:d9:66:5c:72:ed:b6:8e:c5:5d:4d:8c:22:67:30:ab:8a:6e:c3:6a

myhost:~# ethtool -x eth0
RX flow hash indirection table for eth0 with 8 RX ring(s):
    0:      0     1     2     3     4     5     6     7
RSS hash key:
b6:89:91:f3:b2:c3:c2:90:11:e8:ce:45:e8:a9:9d:1c:f2:f6:d4:53:61:8b:26:3a:b3:9a:57:97:c3:b6:79:4d:2e:d9:66:5c:72:ed:b6:8e

myhost:~# ethtool -X eth0 hkey \
03:0e:e2:43:fa:82:0e:73:14:2d:c0:68:21:9e:82:99:b9:84:d0:22:e2:b3:64:9f:4a:af:00:fa:cc:05:b4:4a:17:05:14:73:76:58:bd:2f

myhost:~# ethtool -x eth0
RX flow hash indirection table for eth0 with 8 RX ring(s):
    0:      0     1     2     3     4     5     6     7
RSS hash key:
03:0e:e2:43:fa:82:0e:73:14:2d:c0:68:21:9e:82:99:b9:84:d0:22:e2:b3:64:9f:4a:af:00:fa:cc:05:b4:4a:17:05:14:73:76:58:bd:2f

Reported-by: Ben Hutchings <ben@decadent.org.uk>
Fixes: b9d1ab7eb42e ("mlx4: use netdev_rss_key_fill() helper")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agopercpu-ref: fix DEAD flag contamination of percpu pointer
Tejun Heo [Sat, 22 Nov 2014 14:22:42 +0000 (09:22 -0500)]
percpu-ref: fix DEAD flag contamination of percpu pointer

While decoupling ATOMIC and DEAD flags, f47ad4578461 ("percpu_ref:
decouple switching to percpu mode and reinit") updated
__ref_is_percpu() so that it only tests ATOMIC flag to determine
whether the ref is in percpu mode or not; however, while DEAD implies
ATOMIC, the two flags are set separately during percpu_ref_kill() and
if __ref_is_percpu() races percpu_ref_kill(), it may see DEAD w/o
ATOMIC.  Because __ref_is_percpu() returns @ref->percpu_count_ptr
value verbatim as the percpu pointer after testing ATOMIC, the pointer
may now be contaminated with the DEAD flag.

This can be fixed by clearing the flag bits before returning the
pointer which was the fix proposed by Shaohua; however, as DEAD
implies ATOMIC, we can just test for both flags at once and avoid the
explicit masking.

Update __ref_is_percpu() so that it tests that both ATOMIC and DEAD
are clear before returning @ref->percpu_count_ptr as the percpu
pointer.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-and-Reviewed-by: Shaohua Li <shli@kernel.org>
Link: http://lkml.kernel.org/r/995deb699f5b873c45d667df4add3b06f73c2c25.1416638887.git.shli@kernel.org
Fixes: f47ad4578461 ("percpu_ref: decouple switching to percpu mode and reinit")
9 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 22 Nov 2014 22:33:11 +0000 (14:33 -0800)]
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fix from Thomas Gleixner:
 "A single bugfix for an init order problem in the sun4i subarch
  clockevents code"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clockevent: sun4i: Fix race condition in the probe code

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sat, 22 Nov 2014 22:15:27 +0000 (14:15 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs fixes from Al Viro:
 "Assorted fixes, most in overlayfs land"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  ovl: ovl_dir_fsync() cleanup
  ovl: update MAINTAINERS
  ovl: pass dentry into ovl_dir_read_merged()
  ovl: use lockless_dereference() for upperdentry
  ovl: allow filenames with comma
  ovl: fix race in private xattr checks
  ovl: fix remove/copy-up race
  ovl: rename filesystem type to "overlay"
  isofs: avoid unused function warning
  vfs: fix reference leak in d_prune_aliases()

9 years agoMerge branch 'cxgb4-next'
David S. Miller [Sat, 22 Nov 2014 21:57:52 +0000 (16:57 -0500)]
Merge branch 'cxgb4-next'

Hariprasad Shenai says:

====================
RDMA/cxgb4,cxgb4vf,csiostor: Cleanup macros

This series continues to cleanup all the macros/register defines related to
filter, port, VI, queue, RSS, LDST, firmware, etc that are defined in t4fw_api.h
and the affected files.

Will post few more series so that we can cover all the macros so that they all
follow the same style to be consistent.

The patches series is created against 'net-next' tree.
And includes patches on cxgb4, cxgb4vf, iw_cxgb4 and csiostor driver.

We have included all the maintainers of respective drivers. Kindly review the
change and let us know in case of any review comments.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoRDMA/cxgb4/cxgb4vf/csiostor: Cleanup macros/register defines related to PCIE, RSS...
Hariprasad Shenai [Fri, 21 Nov 2014 07:22:05 +0000 (12:52 +0530)]
RDMA/cxgb4/cxgb4vf/csiostor: Cleanup macros/register defines related to PCIE, RSS and FW

This patch cleanups all PCIE, RSS & FW related macros/register defines that are
defined in t4fw_api.h and the affected files.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agocxgb4/cxgb4vf/csiostor: Cleanup macros/register defines related to port and VI
Hariprasad Shenai [Fri, 21 Nov 2014 07:22:04 +0000 (12:52 +0530)]
cxgb4/cxgb4vf/csiostor: Cleanup macros/register defines related to port and VI

This patch cleanups all port and VI related macros/register defines that are
defined in t4fw_api.h and the affected files.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agocxgb4/cxgb4vf/csiostor: Cleanup macros/register defines related to queues
Hariprasad Shenai [Fri, 21 Nov 2014 07:22:03 +0000 (12:52 +0530)]
cxgb4/cxgb4vf/csiostor: Cleanup macros/register defines related to queues

This patch cleanups all queue related macros/register defines that are defined
in t4fw_api.h and the affected files.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoRDMA/cxgb4/csiostor: Cleansup FW related macros/register defines for PF/VF and LDST
Hariprasad Shenai [Fri, 21 Nov 2014 07:22:02 +0000 (12:52 +0530)]
RDMA/cxgb4/csiostor: Cleansup FW related macros/register defines for PF/VF and LDST

This patch cleanups PF/VF and LDST related macros/register defines that are
defined in t4fw_api.h and the affected files.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoRDMA/cxgb4: Cleanup Filter related macros/register defines
Hariprasad Shenai [Fri, 21 Nov 2014 07:22:01 +0000 (12:52 +0530)]
RDMA/cxgb4: Cleanup Filter related macros/register defines

This patch cleanups all filter related macros/register defines that are defined
in t4fw_api.h and the affected files.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoi40e: enable fdb add code, remove unused code
Jesse Brandeburg [Fri, 21 Nov 2014 00:30:02 +0000 (16:30 -0800)]
i40e: enable fdb add code, remove unused code

The original FDB code submission wasn't correct and the code
wasn't enabled.  This removes some dead code (can use the common kernel
code for fdb_del and fdb_dump) and correctly enables the fdb_add
function pointer.

The fdb_add functionality is important to i40e because it is needed
for a workaround to allow bridges to work correctly on the i40e
hardware.

Reported-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Acked-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agousb: xhci: rework root port wake bits if controller isn't allowed to wakeup
Lu Baolu [Tue, 18 Nov 2014 09:27:14 +0000 (11:27 +0200)]
usb: xhci: rework root port wake bits if controller isn't allowed to wakeup

When system is being suspended, if host device is not allowed to do wakeup,
xhci_suspend() needs to clear all root port wake on bits. Otherwise, some
platforms may generate spurious wakeup, even if PCI PME# is disabled.

The initial commit ff8cbf250b44 ("xhci: clear root port wake on bits"),
which also got into stable, turned out to not work correctly and had to
be reverted, and is now rewritten.

Cc: stable <stable@vger.kernel.org> # v3.2+
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
[Mathias Nyman: reword commit message]
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUSB: xhci: Reset a halted endpoint immediately when we encounter a stall.
Mathias Nyman [Tue, 18 Nov 2014 09:27:12 +0000 (11:27 +0200)]
USB: xhci: Reset a halted endpoint immediately when we encounter a stall.

If a device is halted and reuturns a STALL, then the halted endpoint
needs to be cleared both on the host and device side. The host
side halt is cleared by issueing a xhci reset endpoint command. The device side
is cleared with a ClearFeature(ENDPOINT_HALT) request, which should
be issued by the device driver if a URB reruen -EPIPE.

Previously we cleared the host side halt after the device side was cleared.
To make sure the host side halt is cleared in time we want to issue the
reset endpoint command immedialtely when a STALL status is encountered.

Otherwise we end up not following the specs and not returning -EPIPE
several times in a row when trying to transfer data to a halted endpoint.

Fixes: bcef3fd (USB: xhci: Handle errors that cause endpoint halts.)
Cc: <stable@vger.kernel.org> # v2.6.33+
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoRevert "xhci: clear root port wake on bits if controller isn't wake-up capable"
Lu Baolu [Tue, 18 Nov 2014 09:27:13 +0000 (11:27 +0200)]
Revert "xhci: clear root port wake on bits if controller isn't wake-up capable"

commit ff8cbf250b44 ("xhci: clear root port wake on bits if controller isn't")
can cause device detection error if runtime PM is enabled, and S3 wake
is disabled. Revert it.
https://bugzilla.kernel.org/show_bug.cgi?id=85701

This commit got into stable and should be reverted from there as well.

Cc: stable <stable@vger.kernel.org> # v3.2+
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reported-by: Dmitry Nezhevenko <dion@inhex.net>
[Mathias Nyman: reword commit message]
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUSB: xhci: don't start a halted endpoint before its new dequeue is set
Mathias Nyman [Tue, 18 Nov 2014 09:27:11 +0000 (11:27 +0200)]
USB: xhci: don't start a halted endpoint before its new dequeue is set

A halted endpoint ring must first be reset, then move the ring
dequeue pointer past the problematic TRB. If we start the ring too
early after reset, but before moving the dequeue pointer we
will end up executing the same problematic TRB again.

As we always issue a set transfer dequeue command after a reset
endpoint command we can skip starting endpoint rings at reset endpoint
command completion.

Without this fix we end up trying to handle the same faulty TD for
contol endpoints. causing timeout, and failing testusb ctrl_out write
tests.

Fixes: e9df17e (USB: xhci: Correct assumptions about number of rings per endpoint.)
Cc: <stable@vger.kernel.org> #v2.6.35
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUSB: uas: Add no-uas quirk for Hitachi usb-3 enclosures 4971:1012
Hans de Goede [Fri, 21 Nov 2014 12:28:03 +0000 (13:28 +0100)]
USB: uas: Add no-uas quirk for Hitachi usb-3 enclosures 4971:1012

These disks have a broken uas implementation, the tag field of the status
iu-s is not set properly, so we need to fall-back to usb-storage for these.

Cc: stable@vger.kernel.org # 3.16
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoMerge tag 'usb-serial-3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...
Greg Kroah-Hartman [Sat, 22 Nov 2014 15:29:38 +0000 (07:29 -0800)]
Merge tag 'usb-serial-3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB-serial fixes for v3.18-rc6

Three fixes for bugs related to TTY error reporting, which can to lead
to data being dropped by the line discipline.

Included is also some new device ids for ftdi_sio and cp210x.

Signed-off-by: Johan Hovold <johan@kernel.org>
9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Sat, 22 Nov 2014 03:28:24 +0000 (22:28 -0500)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Conflicts:
drivers/net/ieee802154/fakehard.c

A bug fix went into 'net' for ieee802154/fakehard.c, which is removed
in 'net-next'.

Add build fix into the merge from Stephen Rothwell in openvswitch, the
logging macros take a new initial 'log' argument, a new call was added
in 'net' so when we merge that in here we have to explicitly add the
new 'log' arg to it else the build fails.

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sat, 22 Nov 2014 01:20:36 +0000 (17:20 -0800)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix BUG when decrypting empty packets in mac80211, from Ronald Wahl.

 2) nf_nat_range is not fully initialized and this is copied back to
    userspace, from Daniel Borkmann.

 3) Fix read past end of b uffer in netfilter ipset, also from Dan
    Carpenter.

 4) Signed integer overflow in ipv4 address mask creation helper
    inet_make_mask(), from Vincent BENAYOUN.

 5) VXLAN, be2net, mlx4_en, and qlcnic need ->ndo_gso_check() methods to
    properly describe the device's capabilities, from Joe Stringer.

 6) Fix memory leaks and checksum miscalculations in openvswitch, from
    Pravin B SHelar and Jesse Gross.

 7) FIB rules passes back ambiguous error code for unreachable routes,
    making behavior confusing for userspace.  Fix from Panu Matilainen.

 8) ieee802154fake_probe() doesn't release resources properly on error,
    from Alexey Khoroshilov.

 9) Fix skb_over_panic in add_grhead(), from Daniel Borkmann.

10) Fix access of stale slave pointers in bonding code, from Nikolay
    Aleksandrov.

11) Fix stack info leak in PPP pptp code, from Mathias Krause.

12) Cure locking bug in IPX stack, from Jiri Bohac.

13) Revert SKB fclone memory freeing optimization that is racey and can
    allow accesses to freed up memory, from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (71 commits)
  tcp: Restore RFC5961-compliant behavior for SYN packets
  net: Revert "net: avoid one atomic operation in skb_clone()"
  virtio-net: validate features during probe
  cxgb4 : Fix DCB priority groups being returned in wrong order
  ipx: fix locking regression in ipx_sendmsg and ipx_recvmsg
  openvswitch: Don't validate IPv6 label masks.
  pptp: fix stack info leak in pptp_getname()
  brcmfmac: don't include linux/unaligned/access_ok.h
  cxgb4i : Don't block unload/cxgb4 unload when remote closes TCP connection
  ipv6: delete protocol and unregister rtnetlink when cleanup
  net/mlx4_en: Add VXLAN ndo calls to the PF net device ops too
  bonding: fix curr_active_slave/carrier with loadbalance arp monitoring
  mac80211: minstrel_ht: fix a crash in rate sorting
  vxlan: Inline vxlan_gso_check().
  can: m_can: update to support CAN FD features
  can: m_can: fix incorrect error messages
  can: m_can: add missing delay after setting CCCR_INIT bit
  can: m_can: fix not set can_dlc for remote frame
  can: m_can: fix possible sleep in napi poll
  can: m_can: add missing message RAM initialization
  ...

9 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Sat, 22 Nov 2014 01:15:28 +0000 (17:15 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Just two radeon and two intel fixes: endian and regression fixes"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon: fix endian swapping in vbios fetch for tdp table
  drm/radeon: disable native backlight control on pre-r6xx asics (v2)
  drm/i915: Kick fbdev before vgacon
  drm/i915: drop WaSetupGtModeTdRowDispatch:snb

9 years agoMerge tag 'sound-3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Sat, 22 Nov 2014 01:11:56 +0000 (17:11 -0800)]
Merge tag 'sound-3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This batch ended up as a relatively high volume due to pending ASoC
  fixes.  But most of fixes there are trivial and/or device- specific
  fixes and quirks, so safe to apply.  The only (ASoC) core fixes are
  the DPCM race fix and the machine-driver matching fix for
  componentization"

* tag 'sound-3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - fix the mic mute led problem for Latitude E5550
  ALSA: hda - move DELL_WMI_MIC_MUTE_LED to the tail in the quirk chain
  ASoC: wm_adsp: Avoid attempt to free buffers that might still be in use
  ALSA: usb-audio: Set the Control Selector to SU_SELECTOR_CONTROL for UAC2
  ALSA: usb-audio: Add ctrl message delay quirk for Marantz/Denon devices
  ASoC: sgtl5000: Fix SMALL_POP bit definition
  ASoC: cs42l51: re-hook of_match_table pointer
  ASoC: rt5670: change dapm routes of PLL connection
  ASoC: rt5670: correct the incorrect default values
  ASoC: samsung: Add MODULE_DEVICE_TABLE for Snow
  ASoC: max98090: Correct pclk divisor settings
  ASoC: dpcm: Fix race between FE/BE updates and trigger
  ASoC: Fix snd_soc_find_dai() matching component by name
  ASoC: rsnd: remove unsupported PAUSE flag
  ASoC: fsi: remove unsupported PAUSE flag
  ASoC: rt5645: Mark RT5645_TDM_CTRL_3 as readable
  ASoC: rockchip-i2s: fix infinite loop in rockchip_snd_rxctrl
  ASoC: es8328-i2c: Fix i2c_device_id name field in es8328_id
  ASoC: fsl_asrc: Add reg_defaults for regmap to fix kernel dump

9 years agoMerge tag 'pm+acpi-3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Sat, 22 Nov 2014 00:56:25 +0000 (16:56 -0800)]
Merge tag 'pm+acpi-3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI power management fix from Rafael Wysocki:
 "This is just a one-liner fixing a regression introduced in 3.13 that
  broke system suspend on some Chromebooks.

  On those machines there are ACPI device objects for some I2C devices
  that can wake up the system from sleep states, but that is done via a
  platform-specific mechanism and the ACPI objects don't contain any
  wakeup-related information.  When we started to use ACPI power
  management with those devices (which happened during the 3.13 cycle),
  their configuration confused the ACPI PM layer that returned error
  codes from suspend callbacks for them causing system suspend to fail.

  However, the ACPI PM layer can safely ignore the wakeup setting from a
  device driver if the ACPI object corresponding to the device in
  question doesn't contain wakeup information in which case the driver
  itself is responsible for setting up the device for system wakeup"

* tag 'pm+acpi-3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / PM: Ignore wakeup setting if the ACPI companion can't wake up