Shubhrajyoti D [Mon, 10 Sep 2012 00:08:49 +0000 (10:08 +1000)]
i2c: Convert struct i2c_msg initialization to C99 format
Convert the struct i2c_msg initialization to C99 format. This makes
maintaining and editing the code simpler. Also helps once other fields
like transferred are added in future.
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
Julia Lawall [Mon, 10 Sep 2012 00:08:49 +0000 (10:08 +1000)]
i2c-smbus: Convert kzalloc to devm_kzalloc
Converting kzalloc to devm_kzalloc simplifies the code and ensures that the
result, alert, is freed after the irq allocated by the subsequent
devm_request_irq. This in turn ensures that when an interrupt can be
triggered, the alert structure is still available.
The problem of a free after a devm_request_irq was found using the
following semantic match (http://coccinelle.lip6.fr/)
devm_request_irq@p1(e1,e2,...,x)
... when any
when != e2 = a
when != x = b
if (...) {
... when != e2 = c
when != x = d
free@p2(...,x,...);
...
return ...;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Jean Delvare <khali@linux-fr.org>
Jean Delvare [Mon, 10 Sep 2012 00:08:49 +0000 (10:08 +1000)]
i2c-i801: Support SMBus multiplexing on Asus Z8 series
Add support for SMBus multiplexing on Asus Z8 motherboard series. On
these boards, the memory slots are behind a GPIO-controlled I2C
multiplexer. Models with 6 or 12 memory slots have 2 segments behind
the multiplexer, while models with 18 memory slots have 3 such
segments.
On these boards, only the memory slots are behind the multiplexer,
so it is possible to keep the autodetection mechanism.
The code is generic enough so it could work on other boards as long as
the multiplexer is controlled by GPIO pins. For other forms of
multiplexing (for example using an I2C device) additional code will be
needed.
Thanks to Asus for providing a board to develop and test this feature,
as well as all the technical information required.
At the moment, the GPIO driver must be loaded before the i2c-i801
driver, but I hope to solve this soon, using deferred probing on
the i2c-mux-gpio side.
Jean Delvare [Mon, 10 Sep 2012 00:08:48 +0000 (10:08 +1000)]
i2c-mux: Add support for device auto-detection
Let I2C bus segments behind multiplexers have a class. This allows for
device auto-detection on these segments. As long as parent segments
don't share the same class, it should be fine.
I implemented support in drivers i2c-mux-gpio and i2c-mux-pca954x. I
left i2c-mux-pca9541 and i2c-mux-pinctrl alone for the moment as I
don't know if this feature makes sense for the use cases of these
drivers.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Peter Korsgaard <peter.korsgaard@barco.com> Cc: David Daney <david.daney@cavium.com> Cc: Michael Lawnick <ml.lawnick@gmx.de> Cc: Rodolfo Giometti <giometti@linux.it>
Jean Delvare [Mon, 10 Sep 2012 00:08:48 +0000 (10:08 +1000)]
i2c-core: Fix for lockdep validator
If kernel is compiled with CONFIG_PROVE_LOCKING the
validator raises an error when a multiplexer is removed
via sysfs and sub-clients are connected to it. This is a
false positive.
Documentation/lockdep-design.txt recommends to handle this
via calls to mutex_lock_nested().
Based on an earlier fix from Michael Lawnick.
Note that the extra code resolves to nothing unless
CONFIG_DEBUG_LOCK_ALLOC=y.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Michael Lawnick <ml.lawnick@gmx.de>
Russell King [Sun, 9 Sep 2012 17:39:28 +0000 (18:39 +0100)]
ARM: Add irqtime accounting support
Add support for irq time accounting. This commit prepares ARM by adding
the call to enable_sched_clock_irqtime() in sched_clock(). We introduce
a new kernel parameter - irqtime - which takes an integer. -1 for auto,
0 for disabled, and 1 for enabled. Auto mode selects IRQ accounting if
we have a sched_clock() tick rate greater than 1MHz.
Frederic Weisbecker is working on a patch set which moves the
IRQ_TIME_ACCOUNTING into arch/, so that part is not incorporated into
this patch; this facility becomes available on ARM only when both this
patch and Frederic's patches are merged.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Paul Gortmaker [Tue, 3 Apr 2012 17:15:00 +0000 (17:15 +0000)]
powerpc: Option FB_FSL_DIU is not really optional for mpc512x
In powerpc randconfig builds, this keeps showing up:
CC arch/powerpc/platforms/512x/mpc512x_shared.o
arch/powerpc/platforms/512x/mpc512x_shared.c:70:9: warning: 'enum fsl_diu_monitor_port' declared inside parameter list
arch/powerpc/platforms/512x/mpc512x_shared.c:70:9: warning: its scope is only this definition or declaration, which is probably not what you want
arch/powerpc/platforms/512x/mpc512x_shared.c:69:56: error: parameter 1 ('port') has incomplete type
arch/powerpc/platforms/512x/mpc512x_shared.c:69:5: warning: function declaration isn't a prototype
arch/powerpc/platforms/512x/mpc512x_shared.c:84:9: warning: 'enum fsl_diu_monitor_port' declared inside parameter list
arch/powerpc/platforms/512x/mpc512x_shared.c:83:56: error: parameter 1 ('port') has incomplete type
arch/powerpc/platforms/512x/mpc512x_shared.c:83:6: warning: function declaration isn't a prototype
arch/powerpc/platforms/512x/mpc512x_shared.c:88:36: warning: 'enum fsl_diu_monitor_port' declared inside parameter list
arch/powerpc/platforms/512x/mpc512x_shared.c:88:57: error: parameter 1 ('port') has incomplete type
arch/powerpc/platforms/512x/mpc512x_shared.c:88:6: warning: function declaration isn't a prototype
arch/powerpc/platforms/512x/mpc512x_shared.c:187:54: error: parameter 1 ('port') has incomplete type
arch/powerpc/platforms/512x/mpc512x_shared.c:187:1: error: return type is an incomplete type
arch/powerpc/platforms/512x/mpc512x_shared.c:187:1: warning: function declaration isn't a prototype
arch/powerpc/platforms/512x/mpc512x_shared.c: In function 'mpc512x_valid_monitor_port':
arch/powerpc/platforms/512x/mpc512x_shared.c:189:9: error: 'FSL_DIU_PORT_DVI' undeclared (first use in this function)
arch/powerpc/platforms/512x/mpc512x_shared.c:189:9: note: each undeclared identifier is reported only once for each function it appears in
arch/powerpc/platforms/512x/mpc512x_shared.c:189:2: warning: 'return' with a value, in function returning void
make[2]: *** [arch/powerpc/platforms/512x/mpc512x_shared.o] Error 1
The reason is that mpc512x_shared.c has a couple token #ifdef
on FB_FSL_DIU/FB_FSL_DIU_MODULE, but they don't come close to
masking all the DIU dependencies, as the above fail shows.
Rather than sprinkle more pointless #ifdef in this file, just
remove the existing two, and make FB_FSL_DIU part of the
dependency. The mpc512x_defconfig already has the line
"CONFIG_FB_FSL_DIU=y" so this change should be zero impact
on real world configs.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Anatolij Gustschin <agust@denx.de>
Will Deacon [Fri, 7 Sep 2012 17:24:53 +0000 (18:24 +0100)]
ARM: 7529/1: delay: set loops_per_jiffy when moving to timer-based loop
The delay functions may be called by some platforms between switching to
the timer-based delay loop but before calibration. In this case, the
initial loops_per_jiffy may not be suitable for the timer (although a
compromise may be achievable) and delay times may be considered too
inaccurate.
This patch updates loops_per_jiffy when switching to the timer-based
delay loop so that delays are consistent prior to calibration.
Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Will Deacon [Fri, 7 Sep 2012 17:24:10 +0000 (18:24 +0100)]
ARM: 7528/1: uaccess: annotate [__]{get,put}_user functions with might_fault()
The user access functions may generate a fault, resulting in invocation
of a handler that may sleep.
This patch annotates the accessors with might_fault() so that we print a
warning if they are invoked from atomic context and help lockdep keep
track of mmap_sem.
Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Fri, 7 Sep 2012 17:22:28 +0000 (18:22 +0100)]
ARM: 7527/1: uaccess: explicitly check __user pointer when !CPU_USE_DOMAINS
The {get,put}_user macros don't perform range checking on the provided
__user address when !CPU_HAS_DOMAINS.
This patch reworks the out-of-line assembly accessors to check the user
address against a specified limit, returning -EFAULT if is is out of
range.
[will: changed get_user register allocation to match put_user]
[rmk: fixed building on older ARM architectures]
Reported-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Cc: stable@vger.kernel.org Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Merge branch 'fixes-for-3.6' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping
Pull DMA-mapping fixes from Marek Szyprowski:
"Another set of fixes for ARM dma-mapping subsystem.
Commit e9da6e9905e6 replaced custom consistent buffer remapping code
with generic vmalloc areas. It however introduced some regressions
caused by limited support for allocations in atomic context. This
series contains fixes for those regressions.
For some subplatforms the default, pre-allocated pool for atomic
allocations turned out to be too small, so a function for setting its
size has been added.
Another set of patches adds support for atomic allocations to
IOMMU-aware DMA-mapping implementation.
The last part of this pull request contains two fixes for Contiguous
Memory Allocator, which relax too strict requirements."
* 'fixes-for-3.6' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping:
ARM: dma-mapping: IOMMU allocates pages from atomic_pool with GFP_ATOMIC
ARM: dma-mapping: Introduce __atomic_get_pages() for __iommu_get_pages()
ARM: dma-mapping: Refactor out to introduce __in_atomic_pool
ARM: dma-mapping: atomic_pool with struct page **pages
ARM: Kirkwood: increase atomic coherent pool size
ARM: DMA-Mapping: print warning when atomic coherent allocation fails
ARM: DMA-Mapping: add function for setting coherent pool size from platform code
ARM: relax conditions required for enabling Contiguous Memory Allocator
mm: cma: fix alignment requirements for contiguous regions
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input subsystem updates from Dmitry Torokhov.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: wacom - add support for EMR on Cintiq 24HD touch
Input: i8042 - add Gigabyte T1005 series netbooks to noloop table
Input: imx_keypad - reset the hardware before enabling
Input: edt-ft5x06 - fix build error when compiling wthout CONFIG_DEBUG_FS
In the current rxhash calculation function, while the
sorting of the ports/addrs is coherent (you get the
same rxhash for packets sharing the same 4-tuple, in
both directions), ports and addrs are sorted
independently. This implies packets from a connection
between the same addresses but crossed ports hash to
the same rxhash.
For example, traffic between A=S:l and B=L:s is hashed
(in both directions) from {L, S, {s, l}}. The same
rxhash is obtained for packets between C=S:s and D=L:l.
This patch ensures that you either swap both addrs and ports,
or you swap none. Traffic between A and B, and traffic
between C and D, get their rxhash from different sources
({L, S, {l, s}} for A<->B, and {L, S, {s, l}} for C<->D)
The patch is co-written with Eric Dumazet <edumazet@google.com>
Signed-off-by: Chema Gonzalez <chema@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Fri, 7 Sep 2012 06:47:41 +0000 (09:47 +0300)]
HID: picoLCD: fix a NULL test in picolcd_raw_cir()
Smatch complains that the NULL checking in this function is not
consistent and could lead to a NULL dereference. The comments say that
we should return here if rc_dev is NULL so I've changed the test to
match the comment.
Merge branch 'pci/mjg-pci-roms-from-efi' into next
* pci/mjg-pci-roms-from-efi:
x86: Use PCI setup data
PCI: Add support for non-BAR ROMs
PCI: Add pcibios_add_device
EFI: Stash ROMs if they're not in the PCI BAR
Will Deacon [Fri, 7 Sep 2012 17:21:44 +0000 (18:21 +0100)]
ARM: 7526/1: traps: send SIGILL if get_user fails on undef handling path
get_user may fail to load from the provided __user address due to an
unhandled fault generated by the access.
In the case of the undefined instruction trap, this results in failure
to load the faulting instruction, in which case we should send SIGILL to
the task rather than continue with potentially uninitialised data.
Signed-off-by: Will Deacon <will.deacon@arm.com> Cc: stable@vger.kernel.org Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Stephen Boyd [Thu, 6 Sep 2012 20:24:32 +0000 (21:24 +0100)]
ARM: 7521/1: Fix semihosting Kconfig text
It seems we were missing some text in the title for the
semihosting DEBUG_LL option. Add in the "/O" and fix up some
minor typos in the help text.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Dave Martin [Mon, 3 Sep 2012 12:49:25 +0000 (13:49 +0100)]
ARM: 7511/1: opcodes: Opcode definitions for the Virtualization Extensions
For now, this patch just adds a definition for the HVC instruction.
More can be added here later, as needed.
Now that we have a real example of how to use the opcode injection
macros properly, this patch also adds a cross-reference from the
explanation in opcodes.h (since without an example, figuring out
how to use the macros is not that easy).
Signed-off-by: Dave Martin <dave.martin@linaro.org> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Dave Martin [Mon, 3 Sep 2012 12:49:24 +0000 (13:49 +0100)]
ARM: 7510/1: opcodes: Add helpers for emitting custom opcodes
This patch adds some __inst_() macros for injecting custom opcodes
in assembler (both inline and in .S files). They should make it
easier and cleaner to get things right in little-/big-
endian/ARM/Thumb-2 kernels without a lot of #ifdefs.
This pure-preprocessor approach is preferred over the alternative
method of wedging extra assembler directives into the assembler
input using top-level asm() blocks, since there is no way to
guarantee that the compiler won't reorder those with respect to
each other or with respect to non-toplevel asm() blocks, unless
-fno-toplevel-reorder is passed (which is in itself somewhat
undesirable because it defeats some potential optimisations).
Currently <asm/unified.h> _does_ silently rely on the compiler not
reordering at the top level, but it seems better to avoid adding
extra code which depends on this if the same result can be achieved
in another way.
Signed-off-by: Dave Martin <dave.martin@linaro.org> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Dave Martin [Mon, 3 Sep 2012 12:49:23 +0000 (13:49 +0100)]
ARM: 7509/1: opcodes: Make opcode byteswapping macros assembly-compatible
Most of the existing macros don't work with assembler, due to the
use of type casts and C functions from <linux/swab.h>.
This patch abstracts out those operations and provides simple
explicit versions for use in assembly code.
__opcode_is_thumb32() and __opcode_is_thumb16() are also converted
to do bitmask-based testing to avoid confusion if these are used in
assembly code (the assembler typically treats all arithmetic values
as signed).
These changes avoid the need for the compiler to pre-evaluate
constant expressions used to generate opcodes. By ensuring that
the forms of these expressions can be evaluated directly by the
assembler, we can just stringify the expressions directly into the
asm during the preprocessing pass. The alternative approach
(passing the evaluated expression via an inline asm "i" constraint)
gets painful because the contents of the asm and the constraints
must be kept in sync. This makes the resulting macros awkward to
use.
Retaining the C forms of the macros allows more efficient code to
be generated when opcodes are generated programmatically at run-
time, but there is no way to embed run-time-generated opcodes in
asm() blocks.
Signed-off-by: Dave Martin <dave.martin@linaro.org> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Dave Martin [Mon, 3 Sep 2012 12:49:22 +0000 (13:49 +0100)]
ARM: 7508/1: opcodes: Don't define the thumb32 byteswapping macros for BE32
The existing __mem_to_opcode_thumb32() is incorrect for BE32
platforms. However, these don't support Thumb-2 kernels, so this
option is not so relevant for those platforms anyway.
This operation is complicated by the lack of unaligned memory
access support prior to ARMv6.
Rather than provide a "working" macro which will probably won't get
used (or worse, will get misused), this patch removes the macro for
BE32 kernels. People manipulating Thumb opcodes prior to ARMv6
should almost certainly be splitting these operations into
halfwords anyway, using __opcode_thumb32_{first,second,compose}()
and the 16-bit opcode transformations.
Signed-off-by: Dave Martin <dave.martin@linaro.org> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Yilu Mao [Mon, 3 Sep 2012 08:14:56 +0000 (09:14 +0100)]
ARM: 7507/1: cache-l2x0.c: save the final aux ctrl value for resuming
There is a bug if l2x0 controller has been enabled when calling
l2x0_init, the aux ctrl register will not be saved in l2x0_saved_regs.
Therefore we will use uninitialized l2x0_saved_regs.aux_ctrl for
resuming later.
In this patch, the aux ctrl value is read and saved after it is
initialized. So we have the real value being set for resuming.
Merge branch 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID updates from Jiri Kosina:
"It contains a fix for Eaton Ellipse MAX UPS from Alan Stern,
performance improvement (not processing debug data if noone is
interested), by Henrik Rydberg, and allowing tpkbd-driven devices to
work even with generic driver in a crippled mode, by Andres Freund."
* 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: tpkbd: work even if the new Lenovo Keyboard driver is not configured
HID: Only dump input if someone is listening
HID: add NOGET quirk for Eaton Ellipse MAX UPS
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
John W. Linville says:
====================
Please pull these fixes intended for 3.6. There are more commits
here than I would like -- I got a bit behind while I was stalking
Steven Rostedt in San Diego last week... I'll slow it down after this!
There are a couple of pulls here. One is from Johannes:
"Please pull (according to the below information) to get a few fixes.
* a fix to properly disconnect in the driver when authentication or
association fails
* a fix to prevent invalid information about mesh paths being reported
to userspace
* a memory leak fix in an nl80211 error path"
The other comes via Gustavo:
"A few updates for the 3.6 kernel. There are two btusb patches to add
more supported devices through the new USB_VENDOR_AND_INTEFACE_INFO()
macro and another one that add a new device id for a Sony Vaio laptop,
one fix for a user-after-free and, finally, two patches from Vinicius
to fix a issue in SMP pairing."
Along with those...
Arend van Spriel provides a fix for a use-after-free bug in brcmfmac.
Daniel Drake avoids a hang by not trying to touch the libertas hardware
duing suspend if it is already powered-down.
Felix Fietkau provides a batch of ath9k fixes that adress some
potential problems with power settings, as well as a fix to avoid a
potential interrupt storm.
Gertjan van Wingerde provides a register-width fix for rt2x00, and
a rt2x00 fix to prevent incorrectly detecting the rfkill status.
He also provides a device ID patch.
Hante Meuleman gives us three brcmfmac fixes, one that properly
initializes a command structure, one that fixes a race condition that
could lose usb requests, and one that removes some log spam.
Marc Kleine-Budde offers an rt2x00 fix for a voltage setting on some
specific devices.
Mohammed Shafi Shajakhan sent an ath9k fix to avoid a crash related to
using timers that aren't allocated when 2 wire bluetooth coexistence
hardware is in use.
Sergei Poselenov changes rt2800usb to do some validity checking for
received packets, avoiding crashes on an ARM Soc.
Stone Piao gives us an mwifiex fix for an incorrectly set skb length
value for a command buffer.
All of these are localized to their specific drivers, and relatively
small. The power-related patches from Felix are bigger than I would
like, but I merged them in consideration of their isolation to ath9k
and the sensitive nature of power settings in wireless devices.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 5 Sep 2012 23:34:44 +0000 (23:34 +0000)]
udp: increment UDP_MIB_INERRORS if copy failed
In UDP recvmsg(), we miss an increase of UDP_MIB_INERRORS if the copy
of skb to userspace failed for whatever reason.
Reported-by: Shawn Bohrer <sbohrer@rgmadvisors.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net/mlx4_core: Return the error value in case of command initialization failure
If mlx4_cmd_init() failed, the init_one function returned
success, although no resources were opened.
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com> Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net/mlx4_core: Fixing error flow in case of QUERY_FW failure
The order of operations was wrong on the teardown flow.
Signed-off-by: Aviad Yehezkel <aviadye@mellanox.com> Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
net/mlx4_core: Looking for promiscuous entries on the correct port
The search for promisc entries was always done on the first port,
While the addition is done on the correct port.
This lead to resource leackage of promisc entries on the second
port and brought to a state where we could no longer enter to
promiscuous mode after enough iterations of "ifconfig promisc"
on the second port.
Fix that by using the correct port when searching.
Reported-by: Marcelo Ricardo Leitner <mleitner@redhat.com> Signed-off-by: Aviad Yehezkel <aviadye@mellanox.com> Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Hadar Hen Zion [Wed, 5 Sep 2012 22:50:49 +0000 (22:50 +0000)]
net/mlx4_core: Add security check / enforcement for flow steering rules set for VMs
Since VFs may be mapped to VMs which aren't trusted entities, flow
steering rules attached through the wrapper on behalf of VFs must be
checked to make sure that their L2 specification relate to MAC address
assigned to that VF, and add L2 specification if its missing.
Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Hadar Hen Zion [Wed, 5 Sep 2012 22:50:48 +0000 (22:50 +0000)]
net/mlx4_core: Put Firmware flow steering structures in common header files
To allow for usage of the flow steering Firmware structures in more locations over the driver,
such as the resource tracker, move them from mcg.c to common header files.
Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 43cedbf0e8dfb9c5610eb7985d5f21263e313802 (SUNRPC: Ensure that
we grab the XPRT_LOCK before calling xprt_alloc_slot) is causing
hangs in the case of NFS over UDP mounts.
Since neither the UDP or the RDMA transport mechanism use dynamic slot
allocation, we can skip grabbing the socket lock for those transports.
Add a new rpc_xprt_op to allow switching between the TCP and UDP/RDMA
case.
Note that the NFSv4.1 back channel assigns the slot directly
through rpc_run_bc_task, so we can ignore that case.
Merge tag 'fixes-for-v3.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into work-linus
usb: fixes for v3.6-rc4
Here's a rather big set of fixes for v3.6-rc4.
There are some fixes for bugs which have been pending for a long
time and only now were uncovered, like the musb and dwc3 patches.
We have some remaining fixes for the ep->desc patch series from
Ido, a fix for renesas DMA usage, IRQ check on musb's DMA and
an oops fix on musb Host implementation.
All patches have been pending on linux-usb for a long time and
shouldn't cause any further regressions.
Catalin Marinas [Mon, 19 Mar 2012 15:13:51 +0000 (15:13 +0000)]
fs: Build sys_stat64() and friends if __ARCH_WANT_COMPAT_STAT64
On AArch64 Linux, we want the sys_stat64() and related functions for
compat support but do not need the generic struct stat64, enabled
automatically if __ARCH_WANT_STAT64.
Marc Zyngier [Mon, 5 Mar 2012 11:49:30 +0000 (11:49 +0000)]
arm64: Generic timers support
This patch adds support for the ARM generic timers with A64 instructions
for accessing the timer registers. It uses the physical counter as the
clock source and the virtual counter as sched_clock.
The timer frequency can be specified via DT or read from the CNTFRQ_EL0
register. The physical counter is also accessible from user space
allowing fast gettimeofday() implementation.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Tony Lindgren <tony@atomide.com>
Will Deacon [Mon, 5 Mar 2012 11:49:33 +0000 (11:49 +0000)]
arm64: Loadable modules
This patch adds support for loadable modules. Loadable modules are
loaded 64MB below the kernel image due to branch relocation restrictions
(see Documentation/arm64/memory.txt).
Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Tony Lindgren <tony@atomide.com>
Catalin Marinas [Tue, 14 Aug 2012 16:08:45 +0000 (17:08 +0100)]
arm64: Add support for /proc/sys/debug/exception-trace
This patch allows setting of the show_unhandled_signals variable via
/proc/sys/debug/exception-trace. The default value is currently 1
showing unhandled user faults (undefined instructions, data aborts) and
invalid signal stack frames.
Catalin Marinas [Mon, 5 Mar 2012 11:49:32 +0000 (11:49 +0000)]
arm64: Floating point and SIMD
This patch adds support for FP/ASIMD register bank saving and restoring
during context switch and FP exception handling to generate SIGFPE.
There are 32 128-bit registers and the context switching is currently
done non-lazily. Benchmarks on real hardware are required before
implementing lazy FP state saving/restoring.
Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
Will Deacon [Mon, 5 Mar 2012 11:49:32 +0000 (11:49 +0000)]
arm64: 32-bit (compat) applications support
This patch adds support for 32-bit applications. The vectors page is a
binary blob mapped into the application user space at 0xffff0000 (the
AArch64 toolchain does not support compilation of AArch32 code). Full
compatibility with ARMv7 user space is supported. The use of deprecated
ARMv7 functionality (SWP, CP15 barriers) has been disabled by default on
AArch64 kernels and unaligned LDM/STM is not supported.
Please note that only the ARM 32-bit EABI is supported, so no OABI
compatibility.
Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Tony Lindgren <tony@atomide.com>
projects / karo-tx-linux.git / log