m68k/atari - ide: do not register interrupt if host->get_lock is set

On m68k, host->get_lock is used to both lock and register the interrupt
that the IDE host shares with other device drivers. Registering the
IDE interrupt handler in ide-probe.c results in duplicating the
interrupt registered (once via host->get lock, and also via init_irq()),
and may result in IDE accepting interrupts even when another driver has
locked the interrupt hardware. This opens the whole locking scheme up
to races.

host->get_lock is set on m68k only, so other drivers' behaviour is not
changed.

Signed-off-by: Michael Schmitz <schmitz@debian.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: linux-ide@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
ide: Fix CS5520 and CS5530 dependencies

As far as I know, the CS5520 and CS5530 chipsets were only used with
32-bit x86 Geode processors, so I think their drivers are only needed
on this architecture, except for build testing purpose.

While we're here, simplify the dependencies for the CS5535 driver.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
ide: Fix SC1200 dependencies

The SC1200 is a SoC based on the Geode GX1 32-bit x86 processor, so
its drivers are only needed on this architecture, except for build
testing purpose.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
slab_common: fix the check for duplicate slab names

The patch 3e374919b314f20e2a04f641ebc1093d758f66a4 is supposed to fix the
problem where kmem_cache_create incorrectly reports duplicate cache name
and fails. The problem is described in the header of that patch.

However, the patch doesn't really fix the problem because of these
reasons:

* the logic to test for debugging is reversed. It was intended to perform
  the check only if slub debugging is enabled (which implies that caches
  with the same parameters are not merged). Therefore, there should be
  #if !defined(CONFIG_SLUB) || defined(CONFIG_SLUB_DEBUG_ON)
  The current code has the condition reversed and performs the test if
  debugging is disabled.

* slub debugging may be enabled or disabled based on kernel command line,
  CONFIG_SLUB_DEBUG_ON is just the default settings. Therefore the test
  based on definition of CONFIG_SLUB_DEBUG_ON is unreliable.

This patch fixes the problem by removing the test
"!defined(CONFIG_SLUB_DEBUG_ON)". Therefore, duplicate names are never
checked if the SLUB allocator is used.

Note to stable kernel maintainers: when backporint this patch, please
backport also the patch 3e374919b314f20e2a04f641ebc1093d758f66a4.

Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org	# 3.6+
Signed-off-by: Pekka Enberg <penberg@kernel.org>
ath10k: remove unnecessary htt rx corruption check

While fixing a bug reported by Avery I went ahead
and added a warning suspecting there might be
something more to the bug. This ended up with
people reporting they see warnings during heavy
traffic. This bought me some time and helped me
understand the problem better - apparently fw/hw
can report a chained msdus as follows: 1 msdu, 1
chained, 1 msdu (0 length).

The patch removes the extra check but leaves the
other change that fixed the original skb_push
panic bug (msdu_chaining was overwritten in an
unfortunate way which made the above example to
be treated as non-chained case).

Reported-by: Yeoh Chun-Yeow <yeohchunyeow@gmail.com>
Reported-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
ath10k: fix 8th virtual AP interface with DFS

Firmware 10.x supports up to 8 virtual AP interfaces, but in a DFS
channel it was possible to create only 7 interfaces as ath10k internal
creates a monitor interface for DFS. Previous vdev map initialization
was missing enough space for 8 + 1 vdevs due to wrong define used and
that's why there was no space for 8th interface. Use the correct define
TARGET_10X_NUM_VDEVS with 10.x firmware to make it possible to create
the 8th virtual interface.

Signed-off-by: Bartosz Markowski <bartosz.markowski@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
xtensa: add fixup for double exception raised in window overflow

There are two FIXMEs in the double exception handler 'for the extremely
unlikely case'. This case gets hit by gcc during kernel build once in
a few hours, resulting in an unrecoverable exception condition.

Provide missing fixup routine to handle this case. Double exception
literals now need 8 more bytes, add them to the linker script.

Also replace bbsi instructions with bbsi.l as we're branching depending
on 8th and 7th LSB-based bits of exception address.

This may be tested by adding the explicit DTLB invalidation to window
overflow handlers, like the following:

    --- a/arch/xtensa/kernel/vectors.S
    +++ b/arch/xtensa/kernel/vectors.S
    @@ -592,6 +592,14 @@ ENDPROC(_WindowUnderflow4)
     ENTRY_ALIGN64(_WindowOverflow8)

    	s32e	a0, a9, -16
    +	bbsi.l	a9, 31, 1f
    +	rsr	a0, ccount
    +	bbsi.l	a0, 4, 1f
    +	pdtlb	a0, a9
    +	idtlb	a0
    +	movi	a0, 9
    +	idtlb	a0
    +1:
    	l32e    a0, a1, -12
    	s32e    a2, a9,  -8
    	s32e    a1, a9, -12

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
xtensa: fix sysmem reservation at the end of existing block

When sysmem reservation occurs exactly at the end of an existing block
that block is deleted, because it is incorrectly included in the range
of memblocks to remove. Fix that by skipping such block.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
HID: sensor-hub: make dyn_callback_lock IRQ-safe

dyn_callback_lock is being taken from IRQ context through hid_irq_in() ->
hid_input_report() -> sensor_hub_raw_event() -> sensor_hub_get_callback(),
therefore anyone else acquiring it needs to disable IRQs to disable deadlocks.

Reported-by: Alexander Holler <holler@ahsoftware.de>
Tested-by: Alexander Holler <holler@ahsoftware.de>
Reported-by: Reyad Attiyat <reyad.attiyat@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
HID: sensor-hub: introduce Kconfig dependency on IOMEM

When NO_IOMEM is enabled (e.g. score architecture), some drivers which
need HAS_IOMEM need notice about it, or it will report related warning:

  warning: (GPIO_SCH && GPIO_ICH && GPIO_VX855 && GPIO_RDC321X && IE6XX_WDT && RADIO_WL1273 && HID_SENSOR_HUB && MFD_NVEC) selects MFD_CORE which has unmet direct dependencies (HAS_IOMEM)

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
HID: rmi: Protect PM-only functions by #ifdef CONFIG_PM

If CONFIG_PM=n:

drivers/hid/hid-rmi.c:432: warning: ‘rmi_post_reset’ defined but not used
drivers/hid/hid-rmi.c:437: warning: ‘rmi_post_resume’ defined but not used

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Input: wacom - cleanup multitouch code when touch_max is 2

Historically we dealt with touch_max equals to 2 differently from
other MT devices. Now we use input_mt_*() to process all MT events,
as long as touch_max is greater than 1. So, there is no need to
take (touch_max == 2) as a special case any more.

Signed-off-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: ti_am335x_tsc - warn about incorrect spelling

In the hopes that people run new kernels on their devices, let's add a
warning message asking users to have their DTS file fixed.

The goal is that by Linux 4.0 we will be able to remove support for the
bogus version of our touchscreen's DTS.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
ARM: OMAP2+: hwmod: Change hardreset soc_ops for AM43XX

am43xx reset register layout is more similar to am33xx than omap4 so
use the am33xx functions for hwmod hardreset soc_ops rather than the
currently used omap4 functions. Without this, assert_hardreset and
deassert_hardreset will not work on am43xx.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
[paul@pwsan.com: fixed build errors for an AM43xx-only Kconfig]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
ARM: OMAP5: hwmod: Add ocp2scp3 and sata hwmods

Create hwmods for ocp2scp3 and sata modules.

[Roger Q] Clean up.

CC: Benoit Cousson <bcousson@baylibre.com>
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
ext4: Fix buffer double free in ext4_alloc_branch()

Error recovery in ext4_alloc_branch() calls ext4_forget() even for
buffer corresponding to indirect block it did not allocate. This leads
to brelse() being called twice for that buffer (once from ext4_forget()
and once from cleanup in ext4_ind_map_blocks()) leading to buffer use
count misaccounting. Eventually (but often much later because there
are other users of the buffer) we will see messages like:
VFS: brelse: Trying to free free buffer

Another manifestation of this problem is an error:
JBD2 unexpected failure: jbd2_journal_revoke: !buffer_revoked(bh);
inconsistent data on disk

The fix is easy - don't forget buffer we did not allocate. Also add an
explanatory comment because the indexing at ext4_alloc_branch() is
somewhat subtle.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
ARM: dts: Enable twl4030 off-idle configuration for selected omaps

N900 now seems to shut down the external oscillator when hitting
off-idle.

And Beagle XM seems to have OSC_EN pin connected to allow shutting
down the oscillator looking at the schematics. The oscillator
output is cut off in off-idle and you can monitor it from R56 on
the bottom side of the board near the power jack. Note that for
beagle we need to also enable the UART wake-up event, the others
have that enabled in earlier patches.

OMAP37XX EVM (TMDSEVM3730) does not seem to have twl4030 clken
pin connected, so there is no point trying to enable shutting
down of the oscillator on it for the extra latency it adds.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Merge tag 'for-v3.16-rc/omap-fixes-a' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v3.16/fixes

Two OMAP hwmod patches for early v3.16-rc kernels.

There's one OMAP SoC integration fix for the AM43xx SoC, without
which, IP blocks can't be placed into hard-reset.

There is also one OMAP5 SoC data addition patch that should have gone
in for v3.16. Normally I wouldn't send this as part of an -rc series,
since it's not technically a fix. But I'd like to make an exception in
this case because:

- it's intended to go in very early in the v3.16-rc series (or even
pre-rc1);

- it's a fairly small change;

- the impact is limited to a single SoC and a single device;

- the only reason that it didn't go in earlier is because it "slipped
through the cracks," rather than for any technical reason.

Basic build, boot, and PM test logs are available here:

http://www.pwsan.com/omap/testlogs/hwmod-a-v3.16-rc/20140615201307/
ARM: shmobile: Add DT and defconfigs to MAINTAINERS

There are a number of DT and defconfig files which
are maintained as part of shmobile but have not been
listed as such in the MAINTAINERS file. This creates
confusion from time to time.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
ARM: DRA722: add detection of SoC information

Add support for DRA72x device DIEID. Currently these devices are
reported as DRA75/74 family of processors.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>