Revert "ath9k_hw: Fix incorrect spur_freq_sd for AR9003"
This reverts commit a844adfd7bee4edc66d337de6c33b348e83552a8.
The commit a844adfd is degrading rx sensitivity of lower rate in
HT40 mode and it is confirmed that reverting the change is
improving rx sensitivity.
spur_freq_sd (for self-corr in AGC) is defined with respect to the
center of each 20MHz channel while spur_phase_delta (for self-corr
in Rx and spur data filter) is defined with respect to the center
of current RF channel.
So in short, we need to subtract spur_freq_sd (for self-corr in AGC)
by the offset between the center of primary20 and the center of RF
channel in SW. This offset could be +/10 MHz for dynamic 40.
Cc: Madhan Jaganathan <madhanj@qca.qualcomm.com> Signed-off-by: Kai Shi <kaishi@qca.qualcomm.com> Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Franky Lin [Mon, 30 Apr 2012 18:43:07 +0000 (11:43 -0700)]
brcmfmac: fix a double spin_unlock_irqrestore issue in dpc
dpc_tl_lock is not acquired in the error handle code for bus down.
But it's unlocked using spin_unlock_irqrestore after finishing task
list walk down. Grab the lock before breaking the loop to avoid a
double unlock.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Franky Lin <frankyl@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Felix Fietkau [Sun, 29 Apr 2012 13:44:16 +0000 (15:44 +0200)]
mac80211: fix AP mode EAP tx for VLAN stations
EAP frames for stations in an AP VLAN are sent on the main AP interface
to avoid race conditions wrt. moving stations.
For that to work properly, sta_info_get_bss must be used instead of
sta_info_get when sending EAP packets.
Previously this was only done for cooked monitor injected packets, so
this patch adds a check for tx->skb->protocol to the same place.
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: stable@vger.kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
wl1251: fix crash on remove due to leftover work item
This driver currently leaves elp_work behind when stopping, which
occasionally results in data corruption because work function ends
up accessing freed memory, typical symptoms of this are various
worker_thread crashes. Fix it by cancelling elp_work.
Cc: stable@vger.kernel.org # v2.6.37+ Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
wl1251: fix crash on remove due to premature kfree
Currently SDIO glue frees it's own structure before calling
wl1251_free_hw(), which in turn calls ieee80211_unregister_hw().
The later call may result in a need to communicate with the chip
to stop it (as it happens now if the interface is still up before
rmmod), which means calls are made back to the glue, resulting in
freed memory access.
Fix this by freeing glue data last.
Cc: stable@vger.kernel.org # v2.6.37+ Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
b43: only reload config after successful initialization
Commit 2a19032 (b43: reload phy and bss settings after core restarts)
introduced an unconditional call to b43_op_config() at the end of
b43_op_start(). When firmware fails to load this can wedge the system.
There's no need to reload the configuration after a failed
initialization anyway, so only make the call if initialization was
successful.
BugLink: http://bugs.launchpad.net/bugs/950295 Cc: Felix Fietkau <nbd@openwrt.org> Cc: <stable@vger.kernel.org> Signed-off-by: Seth Forshee <seth.forshee@canonical.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Wey-Yi Guy [Wed, 25 Apr 2012 15:10:08 +0000 (08:10 -0700)]
iwlwifi: use 6000G2B for 6030 device series
"iwlwifi: use correct released ucode version" change
the ucode api ok from 6000G2 to 6000G2B, but it shall belong
to 6030 device series, not the 6005 device series. Fix it
Cc: stable@vger.kernel.org #3.3+ Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Jonathan Bither [Tue, 24 Apr 2012 09:20:15 +0000 (05:20 -0400)]
ath5k: add missing iounmap to AHB probe removal
When our driver device is removed on the AHB bus, our IO memory is never unmapped.
Signed-off-by: Jonathan Bither <jonbither@gmail.com> Reviewed-by: Pavel Roskin <proski@gnu.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
dpc takes care of all data packets transmissions for sdio function
2. It is possible that it misses some completion events when the
traffic is heavy or it's running on a slow cpu. A linked list is
introduced to make sure dpc is invoked whenever needed.
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Reviewed-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Franky Lin <frankyl@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Franky Lin [Mon, 23 Apr 2012 21:24:52 +0000 (14:24 -0700)]
brcm80211: fmac: fix SDIO function 0 register r/w issue
SDIO stack doesn't have a structure for function 0. The structure
pointer stored in card->sdio_func[0] is actually for function 1.
With current implementation the register read/write is applied to
function 1. This pathch fixes the issue.
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Reviewed-by: Arend van Spriel <arend@broadcom.com> Reviewed-by: Florian Fainelli <florian@openwrt.org> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Franky Lin <frankyl@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
mac80211: call ieee80211_mgd_stop() on interface stop
ieee80211_mgd_teardown() is called on netdev removal, which
occurs after the vif was already removed from the low-level
driver, resulting in the following warning:
Johannes Berg [Mon, 23 Apr 2012 21:17:50 +0000 (14:17 -0700)]
iwlwifi: fix hardware queue programming
Newer devices have 20 (5000 series) or 30 (6000 series)
hardware queues, rather than the 16 that 4965 had. This
was added to the driver a long time ago, but improperly:
the queue registers for the higher queues aren't just
continuations of the registers for the first 16 queues,
they are in other places. Therefore, the hardware would
lock up when trying to activate queue 16 or above and
the device would have to be restarted.
Thanks goes to Emmanuel who identified this and told me
how the queue programming should be done.
Note that we don't use queues 20 and higher today and
doing so needs more work than this.
Cc: stable@vger.kernel.org Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Bluetooth: Fix missing break in hci_cmd_complete_evt
Command complete event for HCI_OP_USER_PASSKEY_NEG_REPLY would result
in calling handler function also for HCI_OP_LE_SET_SCAN_PARAM. This
could result in undefined behaviour.
brcmsmac: "INTERMEDIATE but not AMPDU" only when tracing
I keep getting the following messages on the log buffer:
[ 2167.097507] ieee80211 phy0: brcms_c_dotxstatus: INTERMEDIATE but not AMPDU
[ 2281.331305] ieee80211 phy0: brcms_c_dotxstatus: INTERMEDIATE but not AMPDU
[ 2281.332539] ieee80211 phy0: brcms_c_dotxstatus: INTERMEDIATE but not AMPDU
[ 2329.876605] ieee80211 phy0: brcms_c_dotxstatus: INTERMEDIATE but not AMPDU
[ 2329.877354] ieee80211 phy0: brcms_c_dotxstatus: INTERMEDIATE but not AMPDU
[ 2462.280756] ieee80211 phy0: brcms_c_dotxstatus: INTERMEDIATE but not AMPDU
[ 2615.651689] ieee80211 phy0: brcms_c_dotxstatus: INTERMEDIATE but not AMPDU
From the code comment I understand that this something that can -
and does, quite frequently - happen.
Signed-off-by: Eldad Zack <eldad@fogrefinery.com> Acked-by: Franky Lin<frankyl@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This oops is due to interrupts not being disabled in this particular path.
Reported-by: Dave Airlie <airlied@gmail.com> Tested-by: Dave Airlie <airlied@gmail.com> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Stable <stable@vger.kernel.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
ipw2200: Fix race condition in the command completion acknowledge
Driver incorrectly validates command completion: instead of waiting
for a command to be acknowledged it continues execution. Most of the
time driver gets acknowledge of the command completion in a tasklet
before it executes the next one. But sometimes it sends the next
command before it gets acknowledge for the previous one. In such a
case one of the following error messages appear in the log:
Failed to send SYSTEM_CONFIG: Already sending a command.
Failed to send ASSOCIATE: Already sending a command.
Failed to send TX_POWER: Already sending a command.
After that you need to reload the driver to get it working again.
This bug occurs during roaming (reported by Sam Varshavchik)
https://bugzilla.redhat.com/show_bug.cgi?id=738508
and machine booting (reported by Tom Gundersen and Mads Kiilerich)
https://bugs.archlinux.org/task/28097
https://bugzilla.redhat.com/show_bug.cgi?id=802106
This patch doesn't fix the delay issue during firmware load.
But at least device now works as usual after boot.
Cc: stable@kernel.org Signed-off-by: Stanislav Yakovlev <stas.yakovlev@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
ctx->vif is dereferenced in different part of iwlwifi code, so do not
nullify it.
This should address at least one of the possible reasons of WARNING at
iwlagn_mac_remove_interface, and perhaps some random crashes when
firmware reset is performed.
Cc: stable@vger.kernel.org Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
The 'ath9k_hw_update_regulatory_maxpower'
helper function has been introduced by
commit a55f858852e4345d0a31af593c46738ca8614bff
(ath9k_hw: Cleanup TX power calculation for AR9287).
Updating of the max_power_level value has been moved
into the helper function in that change, however the
removed code from 'ath9k_hw_ar9287_set_txpower' has
not been replaced with a call of the new helper
function.
Due to that missing call, retrieving tx power for 2x2
and 3x3 chainmask is not handled properly. During the
calculation of the tx power for 2x2 and 3x3 chainmasks
the values are reduced. Those reductions must be
compensated during retrieving.
Fix this by adding the missing call of the helper
function.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
ath9k: add an extra boolean parameter to ath9k_hw_apply_txpower
In order to unifying regulatory limit handling
commit ca2c68cc7bc80fc4504fb420df04cce99c9ee6ec
(ath9k_hw: clean up tx power handling) introduced
a new helper function 'ath9k_hw_apply_txpower',
and the direct calls of 'ah->eep_ops->set_txpower'
has been replaced by a call of the helper function.
This caused a change in the behaviour of the
'ath9k_hw_set_txpowerlimit' function. The purpose
of that function is to calculate and store the
rate txpower table and the regulatory limit without
touching the hardware registers. Before the commit,
the 'test' parameter of the function was passed to
the 'ah->eep_ops->set_txpower'. Now the calling of
the 'set_txpower' function happens indirectly through
'ath9k_hw_apply_txpower', so the 'test' argument of
the 'set_txpower' is always 'false'.
This patch restores the original behaviour of
'ath9k_hw_set_txpowerlimit' by adding a new
argument to 'ath9k_hw_apply_txpower.'
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Assigning sequence number for frames without taking care
of the fragment field breaks transmission of fragmented frames.
Fix this by assigning the fragment number properly.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Felix Fietkau [Mon, 16 Apr 2012 12:56:48 +0000 (14:56 +0200)]
mac80211: fix truncated packets in cooked monitor rx
Cooked monitor rx was recently changed to use ieee80211_add_rx_radiotap_header
instead of generating only limited radiotap information.
ieee80211_add_rx_radiotap_header assumes that FCS info is still present if
the hardware supports receiving it, however when cooked monitor rx packets
are processed, FCS info has already been stripped.
Fix this by adding an extra flag indicating FCS presence.
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
bcma: use fallback sprom if no on chip sprom is available
bcma should check for a fallback sprom every time it can not find a
sprom on the card itself or a normal external sprom mapped into the
memory of the chip. When otp sprom support was introduced it tried to
read out the sprom from the wireless chip also if no otp sprom was
available. This caused a Data bus error in bcma_sprom_get() when
reading out the sprom for the SoC.
bcma: add support for on-chip OTP memory used for SPROM storage
This patch was tested on a Netgear WNDR3400 (Broadcom BCM4718 SoC).
Reported-by: Nick Bowler <nbowler@elliptictech.com> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Acked-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Bluetooth: Temporary keys should be retained during connection
If a key is non persistent then it should not be used in future
connections but it should be kept for current connection. And it
should be removed when connecion is removed.
This patch changes the return type of function hci_persistent_key
from int to bool because it makes more sense to return information
whether a key is persistent or not as a bool.
The scratch register addresses have been changed for newer chips.
Since the old chip was never shipped and it will not be supported
any more, just update register addresses to support the new chips.
Cc: <stable@vger.kernel.org> # 3.2.y, 3.3.y Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Felix Fietkau [Thu, 12 Apr 2012 18:36:31 +0000 (20:36 +0200)]
ath9k: wake up the hardware from full sleep when idle is turned off
The hardware needs a reset to recover from full sleep. Issue this reset
directly in the ath9k_config call that turns off idle, otherwise tx
remains dead until the first channel change after the idle state change
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Jonathan Bither [Thu, 12 Apr 2012 10:13:33 +0000 (06:13 -0400)]
ath5k: fix undefined 'THIS_MODULE'
When cross compiling ath5k for a Mips machine with kernel 3.2.14
the compilation fails with "/ath5k/ahb.c:231:12: error: 'THIS_MODULE' undeclared here (not in a function)"
Fix the build by including <linux/export.h>
Signed-off-by: Jonathan Bither <jonbither@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
brcm80211: smac: resume transmit fifo upon receiving frames
There have been reports about not being able to use access-points
on channel 12 and 13 or having connectivity issues when these channels
were part of the selected regulatory domain. Upon switching to these
channels the brcmsmac driver suspends the transmit dma fifos. This
patch resumes them upon handing over the first received beacon to
mac80211.
This patch is to be applied to the stable tree for kernel versions
3.2 and 3.3.
Cc: stable@vger.kernel.org Tested-by: Francesco Saverio Schiavarelli <fschiava@libero.it> Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Reviewed-by: Brett Rudley <brudley@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Amitkumar Karwar [Wed, 28 Mar 2012 18:38:01 +0000 (11:38 -0700)]
libertas: fix signedness bug in lbs_auth_to_authtype()
Return type for lbs_auth_to_authtype() is changed from "u8" to
"int" to return negative error code correctly.
Also an error check is added in connect handler for invalid auth
type.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Samuel Ortiz [Tue, 10 Apr 2012 17:43:03 +0000 (19:43 +0200)]
NFC: Fix the LLCP Tx fragmentation loop
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Larry Finger [Mon, 26 Mar 2012 15:48:20 +0000 (10:48 -0500)]
rtlwifi: Add missing DMA buffer unmapping for PCI drivers
In https://bugzilla.kernel.org/show_bug.cgi?id=42976, a system with driver
rtl8192se used as an AP suffers from "Out of SW-IOMMU space" errors. These
are caused by the DMA buffers used for beacons never being unmapped.
This bug was also reported at
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/961618
Reported-and-Tested-by: Da Xue <da@lessconfused.com> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Stable <stable@vger.kernel.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Larry Finger [Mon, 19 Mar 2012 20:44:31 +0000 (15:44 -0500)]
rtlwifi: Preallocate USB read buffers and eliminate kalloc in read routine
The current version of rtlwifi for USB operations uses kmalloc to
acquire a 32-bit buffer for each read of the device. When
_usb_read_sync() is called with the rcu_lock held, the result is
a "sleeping function called from invalid context" BUG. This is
reported for two cases in https://bugzilla.kernel.org/show_bug.cgi?id=42775.
The first case has the lock originating from within rtlwifi and could
be fixed by rearranging the locking; however, the second originates from
within mac80211. The kmalloc() call is removed from _usb_read_sync()
by creating a ring buffer pointer in the private area and
allocating the buffer data in the probe routine.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Stable <stable@vger.kernel.org> [This version good for 3.3+ - different patch for 3.2 - 2.6.39] Signed-off-by: John W. Linville <linville@tuxdriver.com>
Users have reported connection failures in 3.3.1 and suspend/resume
failures in 3.4-rcX. Revert this commit for now - PS IDLE can be
fixed in a clean manner later on.
Cc: stable@vger.kernel.org Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Chen, Chien-Chia [Thu, 29 Mar 2012 10:21:47 +0000 (18:21 +0800)]
rt2x00: Fix rfkill_polling register function.
Move rt2x00rfkill_register(rt2x00dev) to rt2x00lib_probe_dev
function. It fixes of starting rfkill_poll function at the
right time if sets hard rfkill block and reboot. rt2x00mac_rfkill_poll
should be starting before bringing up the wireless interface.
Signed-off-by: Chen, Chien-Chia <machen@suse.com> Acked-by: Helmut Schaa <helmut.schaa@googlemail.com> CC: Kevin Chou <kevin.chou@mediatek.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Paul Gortmaker [Mon, 26 Mar 2012 00:02:55 +0000 (20:02 -0400)]
bcma: fix build error on MIPS; implicit pcibios_enable_device
The following is seen during allmodconfig builds for MIPS:
drivers/bcma/driver_pci_host.c:518:2: error: implicit declaration
of function 'pcibios_enable_device' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[3]: *** [drivers/bcma/driver_pci_host.o] Error 1
Add the header instead of implicitly assuming it will be present.
Sounds like a good idea, but that alone doesn't fix anything.
The real problem is that the Kconfig has settings related to whether
PCI is possible, i.e.
config BCMA_HOST_PCI_POSSIBLE
bool
depends on BCMA && PCI = y
default y
config BCMA_HOST_PCI
bool "Support for BCMA on PCI-host bus"
depends on BCMA_HOST_PCI_POSSIBLE
...but what is missing is that BCMA_DRIVER_PCI_HOSTMODE doesn't
have any dependencies on the above. Add one.
CC: Hauke Mehrtens <hauke@hauke-m.de> CC: John W. Linville <linville@tuxdriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Larry Finger [Fri, 6 Apr 2012 21:54:17 +0000 (16:54 -0500)]
rtlwifi: Fix oops on rate-control failure
When the rate-control indexing is incorrectly set up, mac80211 issues
a warning and returns NULL from the call to ieee80211_get_tx_rate().
When this happens, avoid a NULL pointer dereference.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Larry Finger [Tue, 3 Apr 2012 20:31:41 +0000 (15:31 -0500)]
rtlwifi: rtl8192de: Fix firmware initialization
Before the switch to asynchronous firmware loading (mainline commit b0302ab),
it was necessary to load firmware when initializing the first of the units
in a dual-mac system. After the change, it is necessary to load firmware in
both units.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Johannes Berg [Mon, 2 Apr 2012 08:51:55 +0000 (10:51 +0200)]
nl80211: ensure interface is up in various APIs
The nl80211 handling code should ensure as much as
it can that the interface is in a valid state, it
can certainly ensure the interface is running.
Not doing so can cause calls through mac80211 into
the driver that result in warnings and unspecified
behaviour in the driver.
Cc: stable@vger.kernel.org Reported-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Johannes Berg [Wed, 28 Mar 2012 19:02:46 +0000 (21:02 +0200)]
mac80211: fix association beacon wait timeout
The TU_TO_EXP_TIME() macro already includes the
"jiffies +" piece of the calculation, so don't
add jiffies again.
Reported-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Tested-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Make the "word-at-a-time" helper functions more commonly usable
I have a new optimized x86 "strncpy_from_user()" that will use these
same helper functions for all the same reasons the name lookup code uses
them. This is preparation for that.
This moves them into an architecture-specific header file. It's
architecture-specific for two reasons:
- some of the functions are likely to want architecture-specific
implementations. Even if the current code happens to be "generic" in
the sense that it should work on any little-endian machine, it's
likely that the "multiply by a big constant and shift" implementation
is less than optimal for an architecture that has a guaranteed fast
bit count instruction, for example.
- I expect that if architectures like sparc want to start playing
around with this, we'll need to abstract out a few more details (in
particular the actual unaligned accesses). So we're likely to have
more architecture-specific stuff if non-x86 architectures start using
this.
(and if it turns out that non-x86 architectures don't start using
this, then having it in an architecture-specific header is still the
right thing to do, of course)
6) Link handling and firmware fixes in bnx2x driver from Yaniv Rosner
and Yuval Mintz.
7) mlx4 erroneously allocates 4 pages at a time, regardless of page
size, fix from Thadeu Lima de Souza Cascardo.
8) SCTP socket option wasn't extended in a backwards compatible way,
fix from Thomas Graf.
9) Add missing address change event emissions to bonding, from Shlomo
Pongratz.
10) /proc/net/dev regressed because it uses a private offset to track
where we are in the hash table, but this doesn't track the offset
pullback that the seq_file code does resulting in some entries being
missed in large dumps.
Fix from Eric Dumazet.
11) do_tcp_sendpage() unloads the send queue way too fast, because it
invokes tcp_push() when it shouldn't. Let the natural sequence
generated by the splice paths, and the assosciated MSG_MORE
settings, guide the tcp_push() calls.
Otherwise what goes out of TCP is spaghetti and doesn't batch
effectively into GSO/TSO clusters.
From Eric Dumazet.
12) Once we put a SKB into either the netlink receiver's queue or a
socket error queue, it can be consumed and freed up, therefore we
cannot touch it after queueing it like that.
Fixes from Eric Dumazet.
13) PPP has this annoying behavior in that for every transmit call it
immediately stops the TX queue, then calls down into the next layer
to transmit the PPP frame.
But if that next layer can take it immediately, it just un-stops the
TX queue right before returning from the transmit method.
Besides being useless work, it makes several facilities unusable, in
particular things like the equalizers. Well behaved devices should
only stop the TX queue when they really are full, and in PPP's case
when it gets backlogged to the downstream device.
David Woodhouse therefore fixed PPP to not stop the TX queue until
it's downstream can't take data any more.
14) IFF_UNICAST_FLT got accidently lost in some recent stmmac driver
changes, re-add. From Marc Kleine-Budde.
15) Fix link flaps in ixgbe, from Eric W. Multanen.
16) Descriptor writeback fixes in e1000e from Matthew Vick.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (47 commits)
net: fix a race in sock_queue_err_skb()
netlink: fix races after skb queueing
doc, net: Update ndo_start_xmit return type and values
doc, net: Remove instruction to set net_device::trans_start
doc, net: Update netdev operation names
doc, net: Update documentation of synchronisation for TX multiqueue
doc, net: Remove obsolete reference to dev->poll
ethtool: Remove exception to the requirement of holding RTNL lock
MAINTAINERS: update for Marvell Ethernet drivers
bonding: properly unset current_arp_slave on slave link up
phonet: Check input from user before allocating
tcp: tcp_sendpages() should call tcp_push() once
ipv6: fix array index in ip6_mc_add_src()
mlx4: allocate just enough pages instead of always 4 pages
stmmac: re-add IFF_UNICAST_FLT for dwmac1000
bnx2x: Clear MDC/MDIO warning message
bnx2x: Fix BCM57711+BCM84823 link issue
bnx2x: Clear BCM84833 LED after fan failure
bnx2x: Fix BCM84833 PHY FW version presentation
bnx2x: Fix link issue for BCM8727 boards.
...
Eric Dumazet [Fri, 6 Apr 2012 08:49:10 +0000 (10:49 +0200)]
net: fix a race in sock_queue_err_skb()
As soon as an skb is queued into socket error queue, another thread
can consume it, so we are not allowed to reference skb anymore, or risk
use after free.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 5 Apr 2012 22:17:46 +0000 (22:17 +0000)]
netlink: fix races after skb queueing
As soon as an skb is queued into socket receive_queue, another thread
can consume it, so we are not allowed to reference skb anymore, or risk
use after free.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Thu, 5 Apr 2012 14:40:06 +0000 (14:40 +0000)]
doc, net: Remove instruction to set net_device::trans_start
Commit 08baf561083bc27a953aa087dd8a664bb2b88e8e ('net:
txq_trans_update() helper') made it unnecessary for most drivers to
set net_device::trans_start (or netdev_queue::trans_start).
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Thu, 5 Apr 2012 14:39:10 +0000 (14:39 +0000)]
doc, net: Remove obsolete reference to dev->poll
Commit bea3348eef27e6044b6161fd04c3152215f96411 ('[NET]: Make NAPI
polling independent of struct net_device objects.') removed the
automatic disabling of NAPI polling by dev_close(), and drivers
must now do this themselves.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Thu, 5 Apr 2012 14:38:49 +0000 (14:38 +0000)]
ethtool: Remove exception to the requirement of holding RTNL lock
Commit e52ac3398c3d772d372b9b62ab408fd5eec96840 ('net: Use device
model to get driver name in skb_gso_segment()') removed the only
in-tree caller of ethtool ops that doesn't hold the RTNL lock.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull "ARM: SoC fixes: from Olof Johansson:
"A bunch of fixes for regressions (and a few other problems) in
3.4-rc1:
- Fix for regression of mach/io.h cleanup on platforms with PCI or
PCMCIA (adding back the include file on those for now)
- AT91 fixes for usb and spi
- smsc911x ethernet fixes for i.MX
- smsc911x fixes for OMAP
- gpio fixes for Tegra
- A handful of build error and warning fixes for various platforms
- cpufreq kconfig dependencies, build and lowlevel debug fixes for
Samsung platforms
In other words, more or less the regular collection of -rc1/2 type
material. A few of them, in particular the smsc911x for OMAP series,
aren't technically regressions for 3.4, but they're valid fixes and
we're still relatively early in the rc cycle so it seems appropriate
to include them."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (60 commits)
ARM: fix __io macro for PCMCIA
ARM: EXYNOS: Fix compiler warning in dma.c file
ARM: EXYNOS: fix ISO C90 warning
ARM: OMAP2+: hwmod: Fix wrong SYSC_TYPE1_XXX_MASK bit definitions
ARM: OMAP2+: hwmod: Make omap_hwmod_softreset wait for reset status
ARM: OMAP2+: hwmod: Restore sysc after a reset
ARM: OMAP2+: omap_hwmod: Allow io_ring wakeup configuration for all modules
ARM: OMAP3: clock data: fill in some missing clockdomains
ARM: OMAP4: clock data: Force a DPLL clkdm/pwrdm ON before a relock
ARM: OMAP4: clock data: fix mult and div mask for USB_DPLL
ARM: OMAP2+: powerdomain: Wait for powerdomain transition in pwrdm_state_switch()
gpio: tegra: Iterate over the correct number of banks
gpio: tegra: fix register address calculations for Tegra30
EXYNOS: fix dependency for EXYNOS_CPUFREQ
ARM: at91: dt: remove unit-address part for memory nodes
ARM: at91: fix check of valid GPIO for SPI and USB
USB: ehci-atmel: add needed of.h header file
ARM: at91/NAND DT bindings: add comments
ARM: at91/at91sam9x5.dtsi: fix NAND ale/cle in DT file
USB: ohci-at91: trivial return code name change
...
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lliubbo/blackfin
Pull a few blackfin compile fixes from Bob Liu.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lliubbo/blackfin:
blackfin: update defconfig for bf527-ezkit
blackfin: gpio: fix compile error if !CONFIG_GPIOLIB
blackfin: fix L1 data A overflow link issue
Bob Liu [Thu, 5 Apr 2012 02:40:35 +0000 (10:40 +0800)]
blackfin: update defconfig for bf527-ezkit
To fix compile error:
drivers/usb/musb/blackfin.h:51:3: error: #error "Please use PIO mode in MUSB
driver on bf52x chip v0.0 and v0.1"
make[4]: *** [drivers/usb/musb/blackfin.o] Error 1
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/apm
Pull an APM fix from Jiri Kosina:
"One deadlock/race fix from Niel that got introduced when we were
moving away from freezer_*_count() to wait_event_freezable()."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/apm:
APM: fix deadlock in APM_IOC_SUSPEND ioctl
Olof Johansson [Fri, 6 Apr 2012 00:09:45 +0000 (17:09 -0700)]
Merge tag 'omap-fixes-a2-for-3.4rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into fixes
From Paul Walmsley:
OMAP clock, powerdomain, clockdomain, and hwmod fixes intended for the
early v3.4-rc series. Also contains an HSMMC integration refinement
of an earlier hardware bug workaround.
* tag 'omap-fixes-a2-for-3.4rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending:
ARM: OMAP2+: hwmod: Fix wrong SYSC_TYPE1_XXX_MASK bit definitions
ARM: OMAP2+: hwmod: Make omap_hwmod_softreset wait for reset status
ARM: OMAP2+: hwmod: Restore sysc after a reset
ARM: OMAP2+: omap_hwmod: Allow io_ring wakeup configuration for all modules
ARM: OMAP3: clock data: fill in some missing clockdomains
ARM: OMAP4: clock data: Force a DPLL clkdm/pwrdm ON before a relock
ARM: OMAP4: clock data: fix mult and div mask for USB_DPLL
ARM: OMAP2+: powerdomain: Wait for powerdomain transition in pwrdm_state_switch()
ARM: OMAP AM3517/3505: clock data: change EMAC clocks aliases
ARM: OMAP: clock: fix race in disable all clocks
ARM: OMAP4: hwmod data: Add aliases for McBSP fclk clocks
ARM: OMAP3xxx: clock data: fix DPLL4 CLKSEL masks
ARM: OMAP3xxx: HSMMC: avoid erratum workaround when transceiver is attached
ARM: OMAP44xx: clockdomain data: correct the emu_sys_clkdm CLKTRCTRL data
Marvell has agreed to do maintenance on the sky2 driver.
* Add the developer to the maintainers file
* Remove the old reference to the long gone (sk98lin) driver
* Rearrange to fit current topic organization
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
bonding: properly unset current_arp_slave on slave link up
When a slave comes up, we're unsetting the current_arp_slave without
removing active flags from it, which can lead to situations where we have
more than one slave with active flags in active-backup mode.
To avoid this situation we must remove the active flags from a slave before
removing it as a current_arp_slave.
Signed-off-by: Veaceslav Falico <vfalico@redhat.com> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Andy Gospodarek <andy@greyhouse.net> Signed-off-by: Marcelo Ricardo Leitner <mleitner@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
A phonet packet is limited to USHRT_MAX bytes, this is never checked during
tx which means that the user can specify any size he wishes, and the kernel
will attempt to allocate that size.
In the good case, it'll lead to the following warning, but it may also cause
the kernel to kick in the OOM and kill a random task on the server.
Signed-off-by: Sasha Levin <levinsasha928@gmail.com> Acked-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 5 Apr 2012 03:05:35 +0000 (03:05 +0000)]
tcp: tcp_sendpages() should call tcp_push() once
commit 2f533844242 (tcp: allow splice() to build full TSO packets) added
a regression for splice() calls using SPLICE_F_MORE.
We need to call tcp_flush() at the end of the last page processed in
tcp_sendpages(), or else transmits can be deferred and future sends
stall.
Add a new internal flag, MSG_SENDPAGE_NOTLAST, acting like MSG_MORE, but
with different semantic.
For all sendpage() providers, its a transparent change. Only
sock_sendpage() and tcp_sendpages() can differentiate the two different
flags provided by pipe_to_sendpage()
Reported-by: Tom Herbert <therbert@google.com> Cc: Nandita Dukkipati <nanditad@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Tom Herbert <therbert@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: H.K. Jerry Chu <hkchu@google.com> Cc: Maciej Żenczykowski <maze@google.com> Cc: Mahesh Bandewar <maheshb@google.com> Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: Eric Dumazet <eric.dumazet@gmail>com> Signed-off-by: David S. Miller <davem@davemloft.net>
Merge batch of fixes from Andrew Morton:
"The simple_open() cleanup was held back while I wanted for laggards to
merge things.
I still need to send a few checkpoint/restore patches. I've been
wobbly about merging them because I'm wobbly about the overall
prospects for success of the project. But after speaking with Pavel
at the LSF conference, it sounds like they're further toward
completion than I feared - apparently davem is at the "has stopped
complaining" stage regarding the net changes. So I need to go back
and re-review those patchs and their (lengthy) discussion."
* emailed from Andrew Morton <akpm@linux-foundation.org>: (16 patches)
memcg swap: use mem_cgroup_uncharge_swap fix
backlight: add driver for DA9052/53 PMIC v1
C6X: use set_current_blocked() and block_sigmask()
MAINTAINERS: add entry for sparse checker
MAINTAINERS: fix REMOTEPROC F: typo
alpha: use set_current_blocked() and block_sigmask()
simple_open: automatically convert to simple_open()
scripts/coccinelle/api/simple_open.cocci: semantic patch for simple_open()
libfs: add simple_open()
hugetlbfs: remove unregister_filesystem() when initializing module
drivers/rtc/rtc-88pm860x.c: fix rtc irq enable callback
fs/xattr.c:setxattr(): improve handling of allocation failures
fs/xattr.c:listxattr(): fall back to vmalloc() if kmalloc() failed
fs/xattr.c: suppress page allocation failure warnings from sys_listxattr()
sysrq: use SEND_SIG_FORCED instead of force_sig()
proc: fix mount -t proc -o AAA
Michal Hocko [Thu, 5 Apr 2012 21:25:16 +0000 (14:25 -0700)]
memcg swap: use mem_cgroup_uncharge_swap fix
Although mem_cgroup_uncharge_swap has an empty placeholder for
!CONFIG_CGROUP_MEM_RES_CTLR_SWAP the definition is placed in the
CONFIG_SWAP ifdef block so we are missing the same definition for
!CONFIG_SWAP which implies !CONFIG_CGROUP_MEM_RES_CTLR_SWAP.
This has not been an issue before, because mem_cgroup_uncharge_swap was
not called from !CONFIG_SWAP context. But Hugh Dickins has a cleanup
patch to call __mem_cgroup_commit_charge_swapin which is defined also
for !CONFIG_SWAP.
Let's move both the empty definition and declaration outside of the
CONFIG_SWAP block to avoid the following compilation error:
mm/memcontrol.c: In function '__mem_cgroup_commit_charge_swapin':
mm/memcontrol.c:2837: error: implicit declaration of function 'mem_cgroup_uncharge_swap'
if CONFIG_SWAP is disabled.
Reported-by: David Rientjes <rientjes@google.com> Signed-off-by: Michal Hocko <mhocko@suse.cz> Cc: Hugh Dickins <hughd@google.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
DA9052/53 PMIC has capability to supply power for upto 3 banks of 6
white serial LEDS. It can also control intensity of independent banks
and to drive these banks boost converter will provide up to 24V and
forward current of max 50mA.
This patch allows to control intensity of the individual WLEDs bank
through DA9052/53 PMIC.
This patch is functionally tested on Samsung SMDKV6410.
Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Matt Fleming [Thu, 5 Apr 2012 21:25:14 +0000 (14:25 -0700)]
C6X: use set_current_blocked() and block_sigmask()
As described in e6fa16ab9c1e ("signal: sigprocmask() should do
retarget_shared_pending()") the modification of current->blocked is
incorrect as we need to check whether the signal we're about to block is
pending in the shared queue.
Also, use the new helper function introduced in commit 5e6292c0f28f
("signal: add block_sigmask() for adding sigmask to current->blocked")
which centralises the code for updating current->blocked after
successfully delivering a signal and reduces the amount of duplicate
code across architectures. In the past some architectures got this code
wrong, so using this helper function should stop that from happening
again.
Acked-by: Mark Salter <msalter@redhat.com> Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Acked-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Christopher Li [Thu, 5 Apr 2012 21:25:14 +0000 (14:25 -0700)]
MAINTAINERS: add entry for sparse checker
Signed-off-by: Christopher Li <sparse@chrisli.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Matt Fleming [Thu, 5 Apr 2012 21:25:12 +0000 (14:25 -0700)]
alpha: use set_current_blocked() and block_sigmask()
As described in e6fa16ab9c1e ("signal: sigprocmask() should do
retarget_shared_pending()") the modification of current->blocked is
incorrect as we need to check for shared signals we're about to block.
Also, use the new helper function introduced in commit 5e6292c0f28f
("signal: add block_sigmask() for adding sigmask to current->blocked")
which centralises the code for updating current->blocked after
successfully delivering a signal and reduces the amount of duplicate
code across architectures. In the past some architectures got this code
wrong, so using this helper function should stop that from happening
again.
Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Stephen Boyd [Thu, 5 Apr 2012 21:25:11 +0000 (14:25 -0700)]
simple_open: automatically convert to simple_open()
Many users of debugfs copy the implementation of default_open() when
they want to support a custom read/write function op. This leads to a
proliferation of the default_open() implementation across the entire
tree.
Now that the common implementation has been consolidated into libfs we
can replace all the users of this function with simple_open().
This replacement was done with the following semantic patch:
Stephen Boyd [Thu, 5 Apr 2012 21:25:09 +0000 (14:25 -0700)]
libfs: add simple_open()
debugfs and a few other drivers use an open-coded version of
simple_open() to pass a pointer from the file to the read/write file
ops. Add support for this simple case to libfs so that we can remove
the many duplicate copies of this simple function.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hugetlbfs: remove unregister_filesystem() when initializing module
It was introduced by d1d5e05ffdc1 ("hugetlbfs: return error code when
initializing module") but as Al pointed out, is a bad idea.
Quoted comments from Al:
"Note that unregister_filesystem() in module init is *always* wrong;
it's not an issue here (it's done too early to care about and
realistically the box is not going anywhere - it'll panic when attempt
to exec /sbin/init fails, if not earlier), but it's a damn bad
example.
Consider a normal fs module. Somebody loads it and in parallel with
that we get a mount attempt on that fs type. It comes between
register and failure exits that causes unregister; at that point we
are screwed since grabbing a reference to module as done by mount is
enough to prevent exit, but not to prevent the failure of init. As
the result, module will get freed when init fails, mounted fs of that
type be damned."
So remove it.
Signed-off-by: Hillf Danton <dhillf@gmail.com> Cc: David Rientjes <rientjes@google.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Morton [Thu, 5 Apr 2012 21:25:07 +0000 (14:25 -0700)]
fs/xattr.c:setxattr(): improve handling of allocation failures
This allocation can be as large as 64k.
- Add __GFP_NOWARN so the a falied kmalloc() is silent
- Fall back to vmalloc() if the kmalloc() failed
Cc: Dave Chinner <david@fromorbit.com> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: David Rientjes <rientjes@google.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Morton [Thu, 5 Apr 2012 21:25:07 +0000 (14:25 -0700)]
fs/xattr.c:listxattr(): fall back to vmalloc() if kmalloc() failed
This allocation can be as large as 64k. As David points out, "falling
back to vmalloc here is much better solution than failing to retreive
the attribute - it will work no matter how fragmented memory gets. That
means we don't get incomplete backups occurring after days or months of
uptime and successful backups".
Cc: Dave Chinner <david@fromorbit.com> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: David Rientjes <rientjes@google.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dave Jones [Thu, 5 Apr 2012 21:25:06 +0000 (14:25 -0700)]
fs/xattr.c: suppress page allocation failure warnings from sys_listxattr()
This size is user controllable, up to a maximum of XATTR_LIST_MAX (64k).
So it's trivial for someone to trigger a stream of order:4 page
allocation errors.
Signed-off-by: Dave Jones <davej@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <david@fromorbit.com> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Vorontsov [Thu, 5 Apr 2012 21:25:05 +0000 (14:25 -0700)]
sysrq: use SEND_SIG_FORCED instead of force_sig()
Change send_sig_all() to use do_send_sig_info(SEND_SIG_FORCED) instead
of force_sig(SIGKILL). With the recent changes we do not need force_ to
kill the CLONE_NEWPID tasks.
And this is more correct. force_sig() can race with the exiting thread,
while do_send_sig_info(group => true) kill the whole process.
Some more notes from Oleg Nesterov:
> Just one note. This change makes no difference for sysrq_handle_kill().
> But it obviously changes the behaviour sysrq_handle_term(). I think
> this is fine, if you want to really kill the task which blocks/ignores
> SIGTERM you can use sysrq_handle_kill().
>
> Even ignoring the reasons why force_sig() is simply wrong here,
> force_sig(SIGTERM) looks strange. The task won't be killed if it has
> a handler, but SIG_IGN can't help. However if it has the handler
> but blocks SIGTERM temporary (this is very common) it will be killed.
Also,
> force_sig() can't kill the process if the main thread has already
> exited. IOW, it is trivial to create the process which can't be
> killed by sysrq.
So, this patch fixes the issue.
Suggested-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The proc_parse_options() call from proc_mount() runs only once at boot
time. So on any later mount attempt, any mount options are ignored
because ->s_root is already initialized.
As a consequence, "mount -o <options>" will ignore the options. The
only way to change mount options is "mount -o remount,<options>".
To fix this, parse the mount options unconditionally.
Rob Herring [Wed, 4 Apr 2012 22:48:04 +0000 (17:48 -0500)]
ARM: fix __io macro for PCMCIA
With commit c334bc1 (ARM: make mach/io.h include optional), PCMCIA was
broken. PCMCIA depends on __io() returning a valid i/o address, and most
ARM platforms require IO_SPACE_LIMIT be set to 0xffffffff for PCMCIA. This
needs a better fix with a fixed i/o address mapping, but for now we just
restore things to the previous behavior.
This fixes at91, omap1, pxa and sa11xx. pxa needs io.h if PCI is enabled,
but PCMCIA is not. sa11xx already has IO_SPACE_LIMIT set to 0xffffffff,
so it doesn't need an io.h.
Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: Joachim Eastwood <joachim.eastwood@jotron.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Andrew Victor <linux@maxim.org.za> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Tested-by: Paul Parsons <lost.distance@yahoo.com> (pxa270) Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Olof Johansson <olof@lixom.net>
Olof Johansson [Thu, 5 Apr 2012 17:44:59 +0000 (10:44 -0700)]
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
From Tony Lindgren:
Note that this also contains a set of fixes that are not regressions
or oopses to properly deal with the smsc911x regulator issue.
Basically the regulators must be per board file as the regulators
can also come from drivers, such as twl4030. So it's best to dumb
down gpmc-smsc911x.c to not even care about the regulators.
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP: fix section mismatches in usb-host.c
ARM: OMAP2+: Fix omap2+ build error
ARM: OMAP2+: smsc911x: Add fixed board regulators
ARM: OMAP2+: smsc911x: Remove regulator support from gmpc-smsc911x
ARM: OMAP2+: smsc911x: Remove unused rate calculation
ARM: OMAP2+ smsc911x: Fix possible stale smsc911x flags
ARM: OMAP2+: smsc911x: Remove odd gpmc_cfg/board_data redirection
ARM: OMAP3+: fix oops triggered in omap_prcm_register_chain_handler(v1)
ARM: OMAP2+: OPP: allow OPP enumeration to continue if device is not present
arm: omap3: pm34xx.c: Replace printk() with appropriate pr_*()
arm: omap3: pm34xx.c: Fix omap3_pm_init() error out paths
ARM: OMAP4: Workaround the OCP synchronisation issue with 32K synctimer.
ARM: OMAP4: prm: fix interrupt register offsets
ARM: OMAP: hwmod: Use sysc_fields->srst_shift and get rid of hardcoded SYSC_TYPE2_SOFTRESET_MASK
Olof Johansson [Thu, 5 Apr 2012 17:41:49 +0000 (10:41 -0700)]
Merge branch 'for-3.4/fixes-for-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into fixes
* 'for-3.4/fixes-for-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
gpio: tegra: Iterate over the correct number of banks
gpio: tegra: fix register address calculations for Tegra30
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