hil/parisc: Disable HIL driver when it gets stuck

When starting a HP machine with HIL driver but without an HIL keyboard
or HIL mouse attached, it may happen that data written to the HIL loop
gets s

hil/parisc: Disable HIL driver when it gets stuck

When starting a HP machine with HIL driver but without an HIL keyboard
or HIL mouse attached, it may happen that data written to the HIL loop
gets stuck (e.g. because the transaction queue is full). Usually one
will then have to reboot the machine because all you see is and endless
output of:
Transaction add failed: transaction already queued?

In the higher layers hp_sdc_enqueue_transaction() is called to queued up
a HIL packet. This function returns an error code, and this patch adds
the necessary checks for this return code and disables the HIL driver if
further packets can't be sent.

Tested on a HP 730 and a HP 715/64 machine.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org>

show more ...

Input: hil_mlc - convert timeval to jiffies

struct timeval is not y2038 safe, and what mlc->instart do is
scheduling a task in a fixed timeout, so jiffies is the
simplest choice here.

In hilse_dono

Input: hil_mlc - convert timeval to jiffies

struct timeval is not y2038 safe, and what mlc->instart do is
scheduling a task in a fixed timeout, so jiffies is the
simplest choice here.

In hilse_donode(), the expires in mod_timer equals

jiffies + intimeout - (now - instart)

If we use jiffies in 'now', the expires equals

instart + intimeout

So, all we need to do is that making sure expires is a future
timestamp before passed it to mod_timer.

[arnd: slightly simplified patch further]

Link: https://lists.linaro.org/pipermail/y2038/2015-October/000937.html
Signed-off-by: WEN Pingbo <pingbo.wen@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Patchwork-Id: 10076615
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

show more ...

Input: serio HIL MLC - don't deref null, don't leak and return proper error

While reviewing various users of kernel memory allocation functions I came
across drivers/input/serio/hil_mlc.c::hil_mlc_r

Input: serio HIL MLC - don't deref null, don't leak and return proper error

While reviewing various users of kernel memory allocation functions I came
across drivers/input/serio/hil_mlc.c::hil_mlc_register() and noticed that:

- it calls kzalloc() but fails to check for a NULL return before use.
- it makes several allocations and if one fails it doesn't free the
previous ones.
- It doesn't return -ENOMEM in the failed memory allocation case (it just
crashes).

This patch corrects all of the above and also reworks the only caller of
this function that I could find
(drivers/input/serio/hp_sdc_mlc.c::hp_sdc_mlc_out()) so that it now checks
the return value of hil_mlc_register() and properly propagates it on
failure and I also restructured the code to remove some labels and goto's
to make it, IMHO nicer to read.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Tested-by: Helge Deller <deller@gmx.de>
Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

show more ...

tree-wide: fix assorted typos all over the place

That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "chan

tree-wide: fix assorted typos all over the place

That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

show more ...

parisc: hp_sdc_mlc.c - check return value of down_trylock()

Signed-off-by: Helge Deller <deller@gmx.de>

Input: hp_sdc_mlc.c - make a struct static

This patch makes the needlessly global struct hp_sdc_mlc_priv_s static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Dmitry Torokhov <dtor@

Input: hp_sdc_mlc.c - make a struct static

This patch makes the needlessly global struct hp_sdc_mlc_priv_s static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

show more ...

m68k: Some input drivers do not check the platform

Some input drivers do not check whether they're actually running on the
correct platform, causing multi-platform kernels to crash if they are not.

m68k: Some input drivers do not check the platform

Some input drivers do not check whether they're actually running on the
correct platform, causing multi-platform kernels to crash if they are not.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

show more ...

Convert asm/semaphore.h users to linux/semaphore.h

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>

Input: HIL - fix rwlock recursion bug

The following bug happens when insmoding hp_sdc_mlc.ko:

HP SDC MLC: Registering the System Domain Controller's HIL MLC.
BUG: rwlock recursion on CPU#0,

Input: HIL - fix rwlock recursion bug

The following bug happens when insmoding hp_sdc_mlc.ko:

HP SDC MLC: Registering the System Domain Controller's HIL MLC.
BUG: rwlock recursion on CPU#0, hotplug/1814, 00854734
Backtrace:
[<10267560>] _raw_write_lock+0x50/0x88
[<10104008>] _write_lock_irqsave+0x14/0x24
[<008537d4>] hp_sdc_mlc_out+0x38/0x25c [hp_sdc_mlc]
[<0084ebd8>] hilse_donode+0x308/0x470 [hil_mlc]
[<0084ed80>] hil_mlcs_process+0x40/0x6c [hil_mlc]
[<10130f80>] tasklet_action+0x78/0xb8
[<10130cec>] __do_softirq+0x60/0xcc
[<1010428c>] __lock_text_end+0x38/0x48
[<10108348>] do_cpu_irq_mask+0xf0/0x11c
[<1010b068>] intr_return+0x0/0xc

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

show more ...

Input: HIL - cleanup coding style

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: HIL - various fixes for HIL drivers

- mark some structures const or __read_mostly
- hilkbd.c: fix uninitialized spinlock in HIL keyboard driver
- hil_mlc.c: use USEC_PER_SEC instead of 100

Input: HIL - various fixes for HIL drivers

- mark some structures const or __read_mostly
- hilkbd.c: fix uninitialized spinlock in HIL keyboard driver
- hil_mlc.c: use USEC_PER_SEC instead of 1000000
- hp_sdc: bugfix for request_irq()/free_irq() parameters, this prevented
multiple load/unload cycles as module

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

show more ...

BUG_ON() Conversion in input/serio/hp_sdc_mlc.c

this changes if() BUG(); constructs to BUG_ON() which is
cleaner and can better optimized away

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Sign

BUG_ON() Conversion in input/serio/hp_sdc_mlc.c

this changes if() BUG(); constructs to BUG_ON() which is
cleaner and can better optimized away

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>

show more ...

[PATCH] fix missing includes

I recently picked up my older work to remove unnecessary #includes of
sched.h, starting from a patch by Dave Jones to not include sched.h
from module.h. This reduces the

[PATCH] fix missing includes

I recently picked up my older work to remove unnecessary #includes of
sched.h, starting from a patch by Dave Jones to not include sched.h
from module.h. This reduces the number of indirect includes of sched.h
by ~300. Another ~400 pointless direct includes can be removed after
this disentangling (patch to follow later).
However, quite a few indirect includes need to be fixed up for this.

In order to feed the patches through -mm with as little disturbance as
possible, I've split out the fixes I accumulated up to now (complete for
i386 and x86_64, more archs to follow later) and post them before the real
patch. This way this large part of the patch is kept simple with only
adding #includes, and all hunks are independent of each other. So if any
hunk rejects or gets in the way of other patches, just drop it. My scripts
will pick it up again in the next round.

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

show more ...

Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in

Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

show more ...

hil/parisc: Disable HIL driver when it gets stuck

When starting a HP machine with HIL driver but without an HIL keyboard
or HIL mouse attached, it may happen that data written to the HIL

hil/parisc: Disable HIL driver when it gets stuck

When starting a HP machine with HIL driver but without an HIL keyboard
or HIL mouse attached, it may happen that data written to the HIL loop
gets stuck (e.g. because the transaction queue is full). Usually one
will then have to reboot the machine because all you see is and endless
output of:
Transaction add failed: transaction already queued?

In the higher layers hp_sdc_enqueue_transaction() is called to queued up
a HIL packet. This function returns an error code, and this patch adds
the necessary checks for this return code and disables the HIL driver if
further packets can't be sent.

Tested on a HP 730 and a HP 715/64 machine.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org>

show more ...

Input: hil_mlc - convert timeval to jiffies

struct timeval is not y2038 safe, and what mlc->instart do is
scheduling a task in a fixed timeout, so jiffies is the
simplest choice here

Input: hil_mlc - convert timeval to jiffies

struct timeval is not y2038 safe, and what mlc->instart do is
scheduling a task in a fixed timeout, so jiffies is the
simplest choice here.

In hilse_donode(), the expires in mod_timer equals

jiffies + intimeout - (now - instart)

If we use jiffies in 'now', the expires equals

instart + intimeout

So, all we need to do is that making sure expires is a future
timestamp before passed it to mod_timer.

[arnd: slightly simplified patch further]

Link: https://lists.linaro.org/pipermail/y2038/2015-October/000937.html
Signed-off-by: WEN Pingbo <pingbo.wen@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Patchwork-Id: 10076615
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

show more ...

Input: serio HIL MLC - don't deref null, don't leak and return proper error

While reviewing various users of kernel memory allocation functions I came
across drivers/input/serio/hil_mlc.

Input: serio HIL MLC - don't deref null, don't leak and return proper error

While reviewing various users of kernel memory allocation functions I came
across drivers/input/serio/hil_mlc.c::hil_mlc_register() and noticed that:

- it calls kzalloc() but fails to check for a NULL return before use.
- it makes several allocations and if one fails it doesn't free the
previous ones.
- It doesn't return -ENOMEM in the failed memory allocation case (it just
crashes).

This patch corrects all of the above and also reworks the only caller of
this function that I could find
(drivers/input/serio/hp_sdc_mlc.c::hp_sdc_mlc_out()) so that it now checks
the return value of hil_mlc_register() and properly propagates it on
failure and I also restructured the code to remove some labels and goto's
to make it, IMHO nicer to read.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Tested-by: Helge Deller <deller@gmx.de>
Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

show more ...

tree-wide: fix assorted typos all over the place

That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperat

tree-wide: fix assorted typos all over the place

That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

show more ...

parisc: hp_sdc_mlc.c - check return value of down_trylock()

Signed-off-by: Helge Deller <deller@gmx.de>

Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 into next

Input: hp_sdc_mlc.c - make a struct static

This patch makes the needlessly global struct hp_sdc_mlc_priv_s static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Dm

Input: hp_sdc_mlc.c - make a struct static

This patch makes the needlessly global struct hp_sdc_mlc_priv_s static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

show more ...

m68k: Some input drivers do not check the platform

Some input drivers do not check whether they're actually running on the
correct platform, causing multi-platform kernels to crash if th

m68k: Some input drivers do not check the platform

Some input drivers do not check whether they're actually running on the
correct platform, causing multi-platform kernels to crash if they are not.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

show more ...

Convert asm/semaphore.h users to linux/semaphore.h

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>

Input: HIL - fix rwlock recursion bug

The following bug happens when insmoding hp_sdc_mlc.ko:

HP SDC MLC: Registering the System Domain Controller's HIL MLC.
BUG: rwlock

Input: HIL - fix rwlock recursion bug

The following bug happens when insmoding hp_sdc_mlc.ko:

HP SDC MLC: Registering the System Domain Controller's HIL MLC.
BUG: rwlock recursion on CPU#0, hotplug/1814, 00854734
Backtrace:
[<10267560>] _raw_write_lock+0x50/0x88
[<10104008>] _write_lock_irqsave+0x14/0x24
[<008537d4>] hp_sdc_mlc_out+0x38/0x25c [hp_sdc_mlc]
[<0084ebd8>] hilse_donode+0x308/0x470 [hil_mlc]
[<0084ed80>] hil_mlcs_process+0x40/0x6c [hil_mlc]
[<10130f80>] tasklet_action+0x78/0xb8
[<10130cec>] __do_softirq+0x60/0xcc
[<1010428c>] __lock_text_end+0x38/0x48
[<10108348>] do_cpu_irq_mask+0xf0/0x11c
[<1010b068>] intr_return+0x0/0xc

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

show more ...

Input: HIL - cleanup coding style

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>