Colin Cross [Thu, 8 Mar 2012 01:34:35 +0000 (17:34 -0800)]
staging: android: persistent_ram: make persistent_ram_write atomic
Allow persistent_ram_write to be called on multiple cpus at
the same time, as long as ecc is not in use. Uses atomics
for the buffer->start and buffer->size counters.
[jstultz: Fix up some pr_info casting issues on 64bit]
CC: Greg KH <gregkh@linuxfoundation.org>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Colin Cross [Thu, 8 Mar 2012 01:34:34 +0000 (17:34 -0800)]
staging: android: persistent_ram: handle reserving and mapping memory
Replace the ioremapped memory passed in from the drivers with
a memblock_reserve and vmap. Adds a new function,
persistent_ram_early_init, designed to be called from the machine
init_early callback, that calls memblock_remove and saves the
provided persistent ram area layout.
Drivers only pass in their struct device * and ecc settings.
Locating and mapping the memory is now handled entirely within
persistent_ram.
Also, convert ram_console to the new persistent_ram_init
parameters that only take a struct device * and ecc settings.
[jstultz: Fix pr_info casting issues on 64bit, folded two
patches as the build breaks if they are apart. Also replaced
phys_to_page() w/ pfn_to_page(addr>>PAGE_SHIFT), as phys_to_page
is only on a few arches.]
CC: Greg KH <gregkh@linuxfoundation.org>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Colin Cross [Thu, 8 Mar 2012 01:34:33 +0000 (17:34 -0800)]
staging: android: persistent_ram: refactor ecc support
Remove CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION and related
#ifdefs. Also allow persistent ram zones without ecc enabled.
For some use cases, like the data portion of the upcoming
persistent_vars patches, or a persistent ftrace ringbuffer,
ecc on every update is too expensive.
CC: Greg KH <gregkh@linuxfoundation.org>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Colin Cross [Thu, 8 Mar 2012 01:34:32 +0000 (17:34 -0800)]
staging: android: ram_console: split out persistent ram
Split ram_console into two halves.
persistent_ram is a set of apis that handle a block of memory
that does not get erased across a reboot. It provides functions
to fill it as a single buffer or a ring buffer, and to extract
the old data after a reboot. It handles ecc on the data to
correct bit errors introduced during reboot.
ram_console is now a small wrapper around persistent_ram that
feeds console data into the ringbuffer, and exports the old
data to /proc/last_kmsg after a reboot.
[jstultz: Moved persistent_ram.h to staging dir]
CC: Greg KH <gregkh@linuxfoundation.org>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Colin Cross [Thu, 8 Mar 2012 01:34:31 +0000 (17:34 -0800)]
staging: android: ram_console: drop verbose ram_console support
Equivalent functionality can be obtained with loglevel=15
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Colin Cross [Thu, 8 Mar 2012 01:34:30 +0000 (17:34 -0800)]
staging: android: ram_console: drop early buffer support
Early ramconsole is not very useful, an early crash will prevent
getting the logged data out on the next boot, and CONFIG_DEBUG_LL=y
will get the same information. Drop it to simplify a future
refactoring.
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Colin Cross [Thu, 8 Mar 2012 01:34:29 +0000 (17:34 -0800)]
staging: android: ram_console: move footer strings
Don't store the bootinfo string and the ecc status string with
the recovered old log data. This will simplify refactoring the
persistent ram code out of the ram console code later.
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dima Zavin [Thu, 8 Mar 2012 01:34:28 +0000 (17:34 -0800)]
staging: android: ram_console: set CON_ANYTIME console flag
We want to ensure that we get all the console messages, even ones
that occur while the printing CPU is not yet online.
[jstultz: tweaked commit subject line]
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Dima Zavin <dima@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 7 Mar 2012 21:21:23 +0000 (13:21 -0800)]
Staging: android: lowmemorykiller.c
Fix compiler warning about the type of the module parameter.
Cc: San Mehat <san@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Paul E. McKenney [Wed, 7 Mar 2012 13:54:00 +0000 (17:54 +0400)]
staging: android/lowmemorykiller: Don't unregister notifier from atomic context
The lowmemorykiller registers an atomic notifier for notfication of when
the task is freed. From this atomic notifier callback, it removes the
atomic notifier via task_free_unregister(). This is incorrect because
atomic_notifier_chain_unregister() calls syncronize_rcu(), which can
sleep, which shouldn't be done from an atomic notifier.
Fix this by registering the notifier during init, and only unregister it
if the lowmemorykiller is unloaded.
Rebased to -next by Paul E. McKenney.
Rebased to -next again by Anton Vorontsov.
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Christian Bejram <christian.bejram@stericsson.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reported-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Zhengwang Ruan [Wed, 7 Mar 2012 02:36:57 +0000 (10:36 +0800)]
Staging:android: Change type for binder_debug_no_lock switch to bool
GCC warns that module_param_named() indirectly returns a bool type value
which is different from 'int' type binder_debug_no_lock declared. Change
it to bool because it is a internal switch for debugging.
Signed-off-by: Zhengwang Ruan <ruan.zhengwang@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johannes Thumshirn [Sat, 25 Feb 2012 14:51:13 +0000 (15:51 +0100)]
Staging: android: timed_gpio: Removed spaces before tabs
Signed-off-by: Johannes Thumshirn <morbidrsa@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rabin Vincent [Wed, 22 Feb 2012 10:28:00 +0000 (15:58 +0530)]
staging: logger: hold mutex while removing reader
The readers list is traversed under the log->mutex lock
(for example from fix_up_readers()), but the deletion of
elements from this list is not being done under this lock.
Cc: Brian Swetland <swetland@google.com>
Cc: Dima Zavin <dima@android.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
David Howells [Fri, 24 Feb 2012 10:57:07 +0000 (10:57 +0000)]
fs: Remove missed ->fds_bits from cessation use of fd_set structs internally
Stephen Rothwell reported that the following commit broke the
linux-next build:
1fd36adcd98c: Replace the fd_sets in struct fdtable with an array of unsigned longs
Fix places where ->fds_bits needed to be removed as the core
kernel no longer uses fd_set internally for file descriptor
table management. There are two places:
(1) drivers/staging/android/binder.c
(2) arch/mips/kernel/kspd.c
Question: Should sp_cleanup() in the MIPS arch be using find_next_bit()
or fls()?
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Ralf Bächle <ralf@linux-mips.org>
cc: Arve Hjønnevåg <arve@android.com>
Link: http://lkml.kernel.org/r/20120224105707.32170.11550.stgit@warthog.procyon.org.uk
Signed-off-by: Ingo Molnar <mingo@elte.hu>
David Howells [Thu, 16 Feb 2012 17:49:42 +0000 (17:49 +0000)]
Wrap accesses to the fd_sets in struct fdtable
Wrap accesses to the fd_sets in struct fdtable (for recording open files and
close-on-exec flags) so that we can move away from using fd_sets since we
abuse the fd_set structs by not allocating the full-sized structure under
normal circumstances and by non-core code looking at the internals of the
fd_sets.
The first abuse means that use of FD_ZERO() on these fd_sets is not permitted,
since that cannot be told about their abnormal lengths.
This introduces six wrapper functions for setting, clearing and testing
close-on-exec flags and fd-is-open flags:
void __set_close_on_exec(int fd, struct fdtable *fdt);
void __clear_close_on_exec(int fd, struct fdtable *fdt);
bool close_on_exec(int fd, const struct fdtable *fdt);
void __set_open_fd(int fd, struct fdtable *fdt);
void __clear_open_fd(int fd, struct fdtable *fdt);
bool fd_is_open(int fd, const struct fdtable *fdt);
Note that I've prepended '__' to the names of the set/clear functions because
they require the caller to hold a lock to use them.
Note also that I haven't added wrappers for looking behind the scenes at the
the array. Possibly that should exist too.
Signed-off-by: David Howells <dhowells@redhat.com>
Link: http://lkml.kernel.org/r/20120216174942.23314.1364.stgit@warthog.procyon.org.uk
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
David Rientjes [Tue, 14 Feb 2012 03:28:49 +0000 (19:28 -0800)]
staging: android, lowmemorykiller: convert to use oom_score_adj
/proc/pid/oom_adj is deprecated and will be removed in August 2012
according to Documentation/feature-removal-schedule.txt. Convert its
usage in the lowmemorykiller to use the new interface, oom_score_adj,
instead.
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
John Stultz [Thu, 9 Feb 2012 22:24:41 +0000 (14:24 -0800)]
staging: android-alarm: Support old drivers via preprocessor aliasing
Older out of tree drivers that were desgined to the Android Alarm
in-kernel API may not build due to the namespace collision fixed in
an earlier patch. Per Arve's suggestion, this patch provides
preprocessor macros that allow older drivers to build.
CC: Arve Hjønnevåg <arve@android.com>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
John Stultz [Thu, 9 Feb 2012 22:24:40 +0000 (14:24 -0800)]
staging: android-alarm: Fixup minor pr_alarm warnings
This patch fixes the following warnings:
drivers/staging/android/alarm.c: In function ‘alarm_timer_triggered’:
drivers/staging/android/alarm.c:344: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long int’
drivers/staging/android/alarm.c:367: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long int’
CC: Arve Hjønnevåg <arve@android.com>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
JP Abgrall [Thu, 9 Feb 2012 22:24:39 +0000 (14:24 -0800)]
staging: android-alarm: Fix bad index when canceling alarms[]
It was using ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP_MASK as an
index.
CC: Arve Hjønnevåg <arve@android.com>
CC: Android Kernel Team <kernel-team@android.com>
CC: JP Abgrall <jpa@google.com>
Change-Id: I919860cc71254453e382616bce9fd5455802cb3d
Signed-off-by: JP Abgrall <jpa@google.com>
[jstultz: Tweaked commit subject]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Arve Hjønnevåg [Thu, 9 Feb 2012 22:24:38 +0000 (14:24 -0800)]
staging: android-alarm: Update hrtimer if alarm at the head of the queue is reprogrammed
If an alarm was restarted with a value that moved it away from the head
of a queue, the hrtimer would not be updated. This would cause unnecessary
wakeups.
CC: Arve Hjønnevåg <arve@android.com>
CC: Android Kernel Team <kernel-team@android.com>
Change-Id: If379f8dd92b0bdb3173bd8d057adfe0dc1d15259
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Praneeth Kumar Bajjuri [Thu, 9 Feb 2012 22:24:37 +0000 (14:24 -0800)]
staging: android-alarm: Disable Android alarm driver by default
Do not enable Android alarm driver by default
CC: Arve Hjønnevåg <arve@android.com>
CC: Android Kernel Team <kernel-team@android.com>
CC: Praneeth Bajjuri <praneeth@ti.com>
Change-Id: Iff8f7a65c4eceecfd084074937c72824697b5e7f
Signed-off-by: Praneeth Bajjuri <praneeth@ti.com>
[jstultz: tweaked commit subject & msg]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
John Stultz [Thu, 9 Feb 2012 22:24:36 +0000 (14:24 -0800)]
staging: android-alarm: Reenable android alarm driver
Now that it builds, re-enable android alarm driver in
the makefile and kconfig
CC: Arve Hjønnevåg <arve@android.com>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
John Stultz [Thu, 9 Feb 2012 22:24:35 +0000 (14:24 -0800)]
staging: android-alarm: HACK: wakelock workaround
Allow Android alarmtimer device to build while wakelocks are still
out of tree.
CC: Arve Hjønnevåg <arve@android.com>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
John Stultz [Thu, 9 Feb 2012 22:24:34 +0000 (14:24 -0800)]
staging: android-alarm: Fix namespace collision with upstreamed alarmtimers
The upstreamed alarmtimers are similar but not quite 100% API
compatibile with the android in-kernel alarm api. To aid the
transition, prefix the the android in-kernel api with android_
CC: Arve Hjønnevåg <arve@android.com>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
John Stultz [Thu, 9 Feb 2012 22:24:33 +0000 (14:24 -0800)]
staging: android-alarm: Fix include compile issues
The file asm/mach/time.h doesn't exist on all arches,
so include <linux/time.h>. Also linux/sysdev.h is gone
so kill it.
CC: Arve Hjønnevåg <arve@android.com>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andy Green [Thu, 9 Feb 2012 22:24:32 +0000 (14:24 -0800)]
staging: android-alarm: Add needed module.h includes
Add module.h includes required to build
CC: Arve Hjønnevåg <arve@android.com>
CC: Android Kernel Team <kernel-team@android.com>
CC: Andy Green <andy.green@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
[jstultz: Tweaked commit subject, folded two patches
into one]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Arve Hjønnevåg [Thu, 9 Feb 2012 22:24:31 +0000 (14:24 -0800)]
staging: android-alarm: Don't use save_time_delta.
Remove references to non-existant save_time_delta.
Change-Id: Iaefeca497de02fe36b7f5d79075912f6e349ec53
CC: Arve Hjønnevåg <arve@android.com>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Arve Hjønnevåg <arve@android.com>
[Added commit message -jstultz]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Arve Hjønnevåg [Thu, 9 Feb 2012 22:24:30 +0000 (14:24 -0800)]
staging: android-alarm: Add android alarm driver & in-kernel alarm interface
Drivers can now create alarms that will use an hrtimer while the
system is running and the rtc to wake up from suspend.
CC: Arve Hjønnevåg <arve@android.com>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Arve Hjønnevåg <arve@android.com>
[Fold and move alarm driver and interface to staging,
fix whitespace issue, drop kconfig & make file changes
as it currently doesn't build -jstultz]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Anton Vorontsov [Mon, 6 Feb 2012 16:30:01 +0000 (20:30 +0400)]
staging: android/lowmemorykiller: Do not kill kernel threads
LMK should not try killing kernel threads.
Suggested-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Anton Vorontsov [Mon, 6 Feb 2012 16:29:54 +0000 (20:29 +0400)]
staging: android/lowmemorykiller: No need for task->signal check
task->signal == NULL is not possible, so no need for these checks.
Suggested-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Anton Vorontsov [Mon, 6 Feb 2012 16:29:47 +0000 (20:29 +0400)]
staging: android/lowmemorykiller: Better mm handling
LMK should not directly check for task->mm. The reason is that the
process' threads may exit or detach its mm via use_mm(), but other
threads may still have a valid mm. To catch this we use
find_lock_task_mm(), which walks up all threads and returns an
appropriate task (with lock held).
Suggested-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Anton Vorontsov [Mon, 6 Feb 2012 16:29:41 +0000 (20:29 +0400)]
staging: android/lowmemorykiller: Don't grab tasklist_lock
Grabbing tasklist_lock has its disadvantages, i.e. it blocks
process creation and destruction. If there are lots of processes,
blocking doesn't sound as a great idea.
For LMK, it is sufficient to surround tasks list traverse with
rcu_read_{,un}lock().
>From now on using force_sig() is not safe, as it can race with an
already exiting task, so we use send_sig() now. As a downside, it
won't kill PID namespace init processes, but that's not what we
want anyway.
Suggested-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tim Bird [Wed, 8 Feb 2012 02:34:28 +0000 (18:34 -0800)]
staging: android: logger: clarify non-update of w_off in do_write_log_from_user
Add comment to explain when w_off is not updated in case of failed second
fragment copy to buffer.
Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tim Bird [Wed, 8 Feb 2012 02:32:02 +0000 (18:32 -0800)]
staging: android: logger: clarify code in clock_interval
Add commentary, rename the function and make the code easier to read.
Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tim Bird [Wed, 8 Feb 2012 02:30:09 +0000 (18:30 -0800)]
staging: android: logger: reorder prepare_to_wait and mutex_lock
If mutex_lock waits, it will return in state TASK_RUNNING,
rubbing out the effect of prepare_to_wait().
Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tim Bird [Wed, 8 Feb 2012 18:37:57 +0000 (10:37 -0800)]
staging: android: logger: simplify and optimize get_entry_len
Make this code slightly easier to read, and eliminate calls
to sub-routines. Some of these were previously optimized away
by the compiler, but one memcpy was not.
In my testing, this makes the code about 20% smaller, and
has no sub-routine calls and no branches (on ARM).
v2 of this patch is, IMHO, easier to read than v1. Compared to
that patch it uses __u8 instead of unsigned char, for
consistency with the __u16 val data type, simplifies the
conditional expression, adds a another comment, and
moves a common statement out of the if.
Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tim Bird [Wed, 8 Feb 2012 02:26:38 +0000 (18:26 -0800)]
staging: android: logger: Change logger_offset() from macro to function
Convert to function and add log as a parameter, rather than relying
on log in the context of the macro.
Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tracey Dent [Mon, 23 Jan 2012 02:28:46 +0000 (21:28 -0500)]
drivers/staging/android/timed_gpio.c: Stlye fixes
Just made it more neat and not bother scripts/checkpatch.pl
Signed-off-by: Tracey Dent <tdent48227@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tracey Dent [Mon, 23 Jan 2012 02:28:44 +0000 (21:28 -0500)]
drivers/staging/android/ashmem.c: Cleanups
Minor cleanups that consist of removal of a whitespace and
make file_operations const.
Signed-off-by: Tracey Dent <tdent48227@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Meyer [Sun, 22 Jan 2012 17:34:58 +0000 (18:34 +0100)]
Staging: android: ram_console: Use resource_size function
The semantic patch that makes this change is available
in scripts/coccinelle/api/resource_size.cocci.
More information about semantic patching is available at
http://coccinelle.lip6.fr/
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Justin P. Mattock [Thu, 12 Jan 2012 14:51:31 +0000 (06:51 -0800)]
drivers:staging:android Typos: fix some comments that have typos in them.
Below is a patch that fixes some typos in some comments.
Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Dietsche [Sun, 15 Jan 2012 20:44:34 +0000 (14:44 -0600)]
staging: android: ram_console use kmemdup instead of kmalloc
Replace kmalloc + memcpy will kmemdup in ram_console_late_init
Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Anton Vorontsov [Tue, 7 Feb 2012 05:13:27 +0000 (09:13 +0400)]
staging: android/ram_console: Don't build on arches w/o ioremap
This patch fixes UML build:
CC drivers/staging/android/ram_console.o
drivers/staging/android/ram_console.c: In function
'ram_console_driver_probe':
drivers/staging/android/ram_console.c:358:2: error: implicit declaration
of function 'ioremap' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[3]: *** [drivers/staging/android/ram_console.o] Error 1
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Arve Hjønnevåg [Fri, 13 Jan 2012 18:21:25 +0000 (22:21 +0400)]
staging: android: lowmemorykiller: Don't wait more than one second for a process to die
If a process forked and the child process was killed by the
lowmemorykiller, the lowmemory killer would be disabled until
the parent process reaped the child or it died itself.
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Arve Hjønnevåg [Wed, 1 Feb 2012 23:29:13 +0000 (15:29 -0800)]
Staging: android: binder: Fix crashes when sharing a binder file between processes
Opening the binder driver and sharing the file returned with
other processes (e.g. by calling fork) can crash the kernel.
Prevent these crashes with the following changes:
- Add a mutex to protect against two processes mmapping the
same binder_proc.
- After locking mmap_sem, check that the vma we want to access
(still) points to the same mm_struct.
- Use proc->tsk instead of current to get the files struct since
this is where we get the rlimit from.
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Shuah Khan [Fri, 27 Jan 2012 18:40:10 +0000 (11:40 -0700)]
Staging: android: Remove pmem driver
Addroid pmem driver is no longer used in any of the Android products.
This patch removes pmem driver from Android staging area
Reference: https://lkml.org/lkml/2012/1/23/183
Signed-off-by: Shuah Khan <shuahkhan@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Arve Hjønnevåg [Sat, 21 Jan 2012 03:56:21 +0000 (19:56 -0800)]
Staging: android: binder: Don't call dump_stack in binder_vma_open
If user-space partially unmaps the driver, binder_vma_open
would dump the kernel stack. This is not a kernel bug however
and will be treated as if the whole area was unmapped once
binder_vma_close gets called.
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Marco Navarra [Thu, 22 Dec 2011 12:28:23 +0000 (13:28 +0100)]
Staging: android: fixed 80 characters warnings in lowmemorykiller.c
This patch fixes some 80 chatacters limit warnings in the lowmemorykiller.c file
Signed-off-by: Marco Navarra <fromenglish@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Marco Navarra [Thu, 22 Dec 2011 12:27:07 +0000 (13:27 +0100)]
Staging: android: fixed a space warning in binder.h
This patch fixes a simple tab-space warning in binder.h found by checkpatch tool
Signed-off-by: Marco Navarra <fromenglish@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
John Stultz [Wed, 21 Dec 2011 00:49:54 +0000 (16:49 -0800)]
ashmem: Whitespace cleanups
Fixes checkpatch warnings with the ashmem.c file
CC: Brian Swetland <swetland@google.com>
CC: Colin Cross <ccross@android.com>
CC: Arve Hjønnevåg <arve@android.com>
CC: Dima Zavin <dima@android.com>
CC: Robert Love <rlove@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Colin Cross [Wed, 21 Dec 2011 00:49:53 +0000 (16:49 -0800)]
ashmem: Fix arguments to ashmem_shrink
The arguments to shrink functions have changed, update
ashmem_shrink to match.
Signed-off-by: Colin Cross <ccross@android.com>
[jstultz: tweaked commit subject]
CC: Brian Swetland <swetland@google.com>
CC: Colin Cross <ccross@android.com>
CC: Arve Hjønnevåg <arve@android.com>
CC: Dima Zavin <dima@android.com>
CC: Robert Love <rlove@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Bjorn Bringert [Wed, 21 Dec 2011 00:49:52 +0000 (16:49 -0800)]
ashmem: Support lseek(2) in ashmem driver
Signed-off-by: Bjorn Bringert <bringert@android.com>
[jstultz: tweaked commit subject]
CC: Brian Swetland <swetland@google.com>
CC: Colin Cross <ccross@android.com>
CC: Arve Hjønnevåg <arve@android.com>
CC: Dima Zavin <dima@android.com>
CC: Robert Love <rlove@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Colin Cross [Wed, 21 Dec 2011 00:49:51 +0000 (16:49 -0800)]
ashmem: Update arguments of shrinker for 2.6.35
Signed-off-by: Colin Cross <ccross@google.com>
CC: Brian Swetland <swetland@google.com>
CC: Colin Cross <ccross@android.com>
CC: Arve Hjønnevåg <arve@android.com>
CC: Dima Zavin <dima@android.com>
CC: Robert Love <rlove@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Arve Hjønnevåg [Wed, 21 Dec 2011 00:49:50 +0000 (16:49 -0800)]
ashmem: Fix ASHMEM_SET_PROT_MASK.
Signed-off-by: Arve Hjønnevåg <arve@android.com>
CC: Brian Swetland <swetland@google.com>
CC: Colin Cross <ccross@android.com>
CC: Arve Hjønnevåg <arve@android.com>
CC: Dima Zavin <dima@android.com>
CC: Robert Love <rlove@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Bjorn Bringert [Wed, 21 Dec 2011 00:49:49 +0000 (16:49 -0800)]
ashmem: Implement read(2) in ashmem driver
Signed-off-by: Bjorn Bringert <bringert@android.com>
[jstultz: Tweaked commit subject]
CC: Brian Swetland <swetland@google.com>
CC: Colin Cross <ccross@android.com>
CC: Arve Hjønnevåg <arve@android.com>
CC: Dima Zavin <dima@android.com>
CC: Robert Love <rlove@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Robert Love [Wed, 21 Dec 2011 00:49:48 +0000 (16:49 -0800)]
ashmem: Anonymous shared memory subsystem
The anonymous shared memory (ashmem) subsystem provides a
Unix-y,file-based shared memory interface to user-space. It
works like anonymous memory (e.g. mmapping fd=0) except if
you share the file descriptor via the usual means, you will
share the mapping. The shared memory can be accessed via both
mmap or file I/O. The backing store is a simple shmem file.
Additionally, ashmem introduces the concept of page pinning.
Pinned pages (the default) behave like any anonymous memory.
Unpinned pages are available to the kernel for eviction during
VM pressure. When repinning the pages, the return value
instructs user-space as to any eviction. In this manner,
user-space processes may implement caching and similar
resource management that efficiently integrates with kernel
memory management.
Signed-off-by: Robert Love <rlove@google.com>
ashmem: Don't install fault handler for private mmaps.
Ashmem is used to create named private heaps. If this heap is backed
by a tmpfs file it will allocate two pages for every page touched.
In 2.6.27, the extra page would later be freed, but 2.6.29 does not
scan anonymous pages when running without swap so the memory is not
freed while the file is referenced. This change changes the behavior
of private ashmem mmaps to match /dev/zero instead tmpfs.
Signed-off-by: Arve Hjønnevåg <arve@android.com>
ashmem: Add common prefix to name reported in /proc/pid/maps
Signed-off-by: Arve Hjønnevåg <arve@android.com>
ashmem: don't require a page aligned size
This makes ashmem more similar to shmem and mmap, by
not requiring the specified size to be page aligned,
instead rounding it internally as needed.
Signed-off-by: Marco Nelissen <marcone@android.com>
[jstultz: Improved commit subject and included patch description
from rlove. Also moved ashmem files to staging dir, and reworked
code to avoid touching mm/shmem.c while we're in staging.]
CC: Brian Swetland <swetland@google.com>
CC: Colin Cross <ccross@android.com>
CC: Arve Hjønnevåg <arve@android.com>
CC: Dima Zavin <dima@android.com>
CC: Robert Love <rlove@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Rebecca Schultz [Thu, 24 Jul 2008 18:22:53 +0000 (11:22 -0700)]
staging: android: add pmem driver
This adds the Android pmem driver to the staging tree.
[At this point in time, it is dependent on the ARM platform, due to some
build issues that require it. - gregkh]
Signed-off-by: Rebecca Schultz <rschultz@google.com>
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
Signed-off-by: Dima Zavin <dima@android.com>
Signed-off-by: Jamie Gennis <jgennis@google.com>
Cc: Brian Swetland <swetland@google.com>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Colin Cross <ccross@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Fri, 16 Dec 2011 21:41:37 +0000 (13:41 -0800)]
staging: android: switch: minor code formatting cleanups
This fixes a number of minor space issues in the Android switch code.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Mike Lockwood [Tue, 14 Oct 2008 16:50:16 +0000 (12:50 -0400)]
staging: android: switch: switch class and GPIO drivers.
This adds the Android switch driver code to the staging tree.
[Note, this code was located in drivers/switch/ in the Android kernel
releases, but as that api wasn't generally accepted, and the interface
is working toward changing to the newly proposed extcon inteface, this
driver was placed here until the extcon code is merged into mainline and
the Android userspace code is converted over to using it. - gregkh]
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Mike Lockwood <lockwood@android.com>
Cc: MyungJoo Ham <myungjoo.ham@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Donggeun Kim <dg77.kim@samsung.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: MyungJoo Ham <myungjoo.ham@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: NeilBrown <neilb@suse.de>
Cc: Morten CHRISTIANSEN <morten.christiansen@stericsson.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Marco Navarra [Thu, 15 Dec 2011 16:57:48 +0000 (17:57 +0100)]
Staging: android: fixed white spaces coding style issue in logger.c
This patch fixes some space-before-tabs warnings found by checkpatch tool on the staging android driver file logger.c
Signed-off-by: Marco Navarra <fromenglish@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Colin Cross [Tue, 25 Oct 2011 21:31:58 +0000 (14:31 -0700)]
staging: android: ram_console: pass in a boot info string
Allow the board file to pass a boot info string through the
platform data that is appended to the /proc/last_kmsg file.
[moved the .h file to drivers/staging/android/ to be self-contained - gregkh]
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
JP Abgrall [Fri, 12 Aug 2011 04:33:35 +0000 (21:33 -0700)]
android: logger: bump up the logger buffer sizes
(port from common android-2.6.39
commit:
11430f16545205c614dd5bd58e4a7ee630fc0f9f)
events: (no change, 256)
main: 64 -> 256
radio: 64 -> 256
system: 64 -> 256
Signed-off-by: JP Abgrall <jpa@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Colin Cross [Wed, 22 Jun 2011 23:05:47 +0000 (16:05 -0700)]
android: lowmemorykiller: Fix arguments to lowmem_shrink
The arguments to shrink functions have changed, update
lowmem_shrink to match.
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Arve Hjønnevåg [Wed, 24 Nov 2010 01:29:04 +0000 (17:29 -0800)]
staging: android: lowmemorykiller: Ignore shmem pages in page-cache
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Colin Cross [Sun, 22 Aug 2010 00:25:42 +0000 (17:25 -0700)]
staging: android: lowmemorykiller: Update arguments of shrinker for 2.6.35
Signed-off-by: Colin Cross <ccross@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
San Mehat [Thu, 6 May 2010 22:43:46 +0000 (15:43 -0700)]
staging: android: lowmemorykiller: Remove bitrotted codepath
Now that we're murder-synchronous, this code path will never be
called (and if it does, it doesn't tell us anything useful other
than we killed a task that was already being killed by somebody
else but hadn't gotten its' signal yet)
Signed-off-by: San Mehat <san@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Christopher Lais [Sat, 1 May 2010 20:51:48 +0000 (15:51 -0500)]
staging: binder: Fix memory corruption via page aliasing
binder_deferred_release was not unmapping the page from the buffer
before freeing it, causing memory corruption. This only happened
when page(s) had not been freed by binder_update_page_range, which
properly unmaps the pages.
This only happens on architectures with VIPT aliasing.
To reproduce, create a program which opens, mmaps, munmaps, then closes
the binder very quickly. This should leave a page allocated when the
binder is released. When binder_deferrred_release is called on the
close, the page will remain mapped to the address in the linear
proc->buffer. Later, we may map the same physical page to a different
virtual address that has different coloring, and this may cause
aliasing to occur.
PAGE_POISONING will greatly increase your chances of noticing any
problems.
Signed-off-by: Christopher Lais <chris+android@zenthought.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
San Mehat [Wed, 5 May 2010 18:38:42 +0000 (11:38 -0700)]
staging: android: lowmemkiller: Substantially reduce overhead during reclaim
This patch optimizes lowmemkiller to not do any work when it has an outstanding
kill-request. This greatly reduces the pressure on the task_list lock
(improving interactivity), as well as improving the vmscan performance
when under heavy memory pressure (by up to 20x in tests).
Note: For this enhancement to work, you need CONFIG_PROFILING
Signed-off-by: San Mehat <san@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
San Mehat [Mon, 26 Apr 2010 22:11:04 +0000 (15:11 -0700)]
staging: android: lowmemorykiller: Don't try to kill the same pid over and over
Under certain circumstances, a process can take awhile to
handle a sig-kill (especially if it's in a scheduler group with
a very low share ratio). When this occurs, lowmemkiller returns
to vmscan indicating the process memory has been freed - even
though the process is still waiting to die. Since the memory
hasn't actually freed, lowmemkiller is called again shortly after,
and picks the same process to die; regardless of the fact that
it has already been 'scheduled' to die and the memory has already
been reported to vmscan as having been freed.
Solution is to check fatal_signal_pending() on the selected
task, and if it's already pending destruction return; indicating
to vmscan that no resources were freed on this pass.
Signed-off-by: San Mehat <san@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Arve Hjønnevåg [Thu, 22 Apr 2010 22:53:23 +0000 (15:53 -0700)]
Staging: android: binder: Create dedicated workqueue for binder deferred work
Some drivers flush the global workqueue when closed. This would deadlock if
the last reference to the file was released from the binder.
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Mike Lockwood [Sat, 17 Apr 2010 16:01:35 +0000 (12:01 -0400)]
Staging: android: timed_gpio: Properly discard invalid timeout values.
The timed output device never previously checked the return value of sscanf,
resulting in an uninitialized int being passed to enable() if input value
was invalid.
Signed-off-by: Mike Lockwood <lockwood@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Arve Hjønnevåg [Wed, 29 Apr 2009 03:57:50 +0000 (20:57 -0700)]
staging: android: binder: Move debugging information from procfs to debugfs
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Arve Hjønnevåg [Wed, 29 Apr 2009 03:57:50 +0000 (20:57 -0700)]
binder: Use seq_file for debug interface.
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
San Mehat [Wed, 24 Feb 2010 00:09:47 +0000 (16:09 -0800)]
android: logger: Add new system log for framework/system log messages
Signed-off-by: San Mehat <san@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Arve Hjønnevåg [Thu, 7 Jan 2010 01:17:33 +0000 (17:17 -0800)]
Staging: android: timed_gpio: Request gpios.
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Arve Hjønnevåg [Fri, 18 Dec 2009 07:42:08 +0000 (23:42 -0800)]
Staging: android: ram_console: Start ram console earlier
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
San Mehat [Thu, 17 Sep 2009 21:27:41 +0000 (14:27 -0700)]
staging: android: ramconsole: Ensure ramconsole does not get cluttered by apanic threads
[Note, this is part of a patch from Sam, just the drivers/staging/
portion, that adds a function that the apanic code calls, but the apanic
code isn't here, so just include part of this to make merges and diffs
easier and this keeps things self-contained - gregkh]
Signed-off-by: San Mehat <san@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Wed, 30 Nov 2011 11:32:24 +0000 (20:32 +0900)]
Revert "Staging: android: mark subsystem as broken"
This reverts commit
2cdf99ce2b9418c9d7c5f907195cfac421375520.
It now builds, so this can be reverted.
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Brian Swetland <swetland@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Colin Cross [Thu, 15 Apr 2010 22:21:51 +0000 (15:21 -0700)]
android-common: Fix slab.h includes for 2.6.34-rc4
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Arve Hjønnevåg [Wed, 21 Apr 2010 05:33:05 +0000 (22:33 -0700)]
android-common: include linux/slab.h
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Corentin Chary [Sat, 28 Nov 2009 08:45:14 +0000 (09:45 +0100)]
staging/android: fix build issues
Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Wed, 30 Nov 2011 11:18:14 +0000 (20:18 +0900)]
Revert "Staging: android: delete android drivers"
This reverts commit
b0a0ccfad85b3657fe999805df65f5cfe634ab8a.
Turns out I was wrong, we want these in the tree.
Note, I've disabled the drivers from the build at the moment, so other
patches can be applied to fix some build issues due to internal api
changes since the code was removed from the tree.
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Brian Swetland <swetland@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Grazvydas Ignotas [Wed, 25 Apr 2012 22:07:00 +0000 (01:07 +0300)]
Merge branch 'stable-3.2' into pandora-3.2
Conflicts:
arch/arm/mm/proc-v7.S
Greg Kroah-Hartman [Sun, 22 Apr 2012 22:31:32 +0000 (15:31 -0700)]
Linux 3.2.16
Dave Airlie [Thu, 19 Apr 2012 14:42:58 +0000 (15:42 +0100)]
drm/radeon: fix load detect on rn50 with hardcoded EDIDs.
commit
a09d431f344d854e4fe9cfac44f78cb8202f3eb7 upstream.
When the force changes went in back in 3.3.0, we ended up returning
disconnected in the !force case, and the connected in when forced,
as it hit the hardcoded check.
Fix it so all exits go via the hardcoded check and stop spurious
modesets on platforms with hardcoded EDIDs.
Reported-by: Evan McNabb (Red Hat)
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dave Airlie [Fri, 13 Apr 2012 10:14:50 +0000 (11:14 +0100)]
drm/radeon: disable MSI on RV515
commit
16a5e32b83fd946312b9b13590c75d20c95c5202 upstream.
My rv515 card is very flaky with msi enabled. Every so often it loses a rearm
and never comes back, manually banging the rearm brings it back.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Takashi Iwai [Wed, 18 Apr 2012 13:21:07 +0000 (15:21 +0200)]
drm/radeon/kms: fix the regression of DVI connector check
commit
e36325071832f1ba96ac54fb8ba1459f08b05dd8 upstream.
The check of the encoder type in the commit [
e00e8b5e: drm/radeon/kms:
fix analog load detection on DVI-I connectors] is obviously wrong, and
it's the culprit of the regression on my workstation with DVI-analog
connection resulting in the blank output.
Fixed the typo now.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kees Cook [Mon, 19 Mar 2012 23:12:53 +0000 (16:12 -0700)]
futex: Do not leak robust list to unprivileged process
commit
bdbb776f882f5ad431aa1e694c69c1c3d6a4a5b8 upstream.
It was possible to extract the robust list head address from a setuid
process if it had used set_robust_list(), allowing an ASLR info leak. This
changes the permission checks to be the same as those used for similar
info that comes out of /proc.
Running a setuid program that uses robust futexes would have had:
cred->euid != pcred->euid
cred->euid == pcred->uid
so the old permissions check would allow it. I'm not aware of any setuid
programs that use robust futexes, so this is just a preventative measure.
(This patch is based on changes from grsecurity.)
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Darren Hart <dvhart@linux.intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Serge E. Hallyn <serge.hallyn@canonical.com>
Cc: kernel-hardening@lists.openwall.com
Cc: spender@grsecurity.net
Link: http://lkml.kernel.org/r/20120319231253.GA20893@www.outflux.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jesse Sung [Thu, 22 Dec 2011 02:48:47 +0000 (10:48 +0800)]
Bluetooth: Add support for BCM20702A0 [0a5c:21e3]
commit
c0190925dacd976a67044f4382d4effbed568dce upstream.
Add another vendor specific ID for BCM20702A0.
output of usb-devices:
T: Bus=06 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 4 Spd=12 MxCh= 0
D: Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0a5c ProdID=21e3 Rev=01.12
S: Manufacturer=Broadcom Corp
S: Product=BCM20702A0
S: SerialNumber=
9439E5CBF66C
C: #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr=0mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none)
I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none)
I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
I: If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none)
Signed-off-by: Wen-chien Jesse Sung <jesse.sung@canonical.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cho, Yu-Chen [Wed, 14 Mar 2012 20:01:21 +0000 (22:01 +0200)]
Bluetooth: Add Atheros maryann PIDVID support
commit
07c0ea874d43c299d185948452945a361052b6e3 upstream.
Add Atheros maryann 0cf3:311d PIDVID support
This module is AR3012 Series.
Include /sys/kernel/debug/usb/devices output here for reference
before:
T: Bus=04 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 2 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0cf3 ProdID=311d Rev= 0.01
S: Manufacturer=Atheros Communications
S: Product=Bluetooth USB Host Controller
S: SerialNumber=Alaska Day 2006
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms
I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms
I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms
I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms
I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms
I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms
after:
T: Bus=04 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 2 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0cf3 ProdID=311d Rev= 0.02
S: Manufacturer=Atheros Communications
S: Product=Bluetooth USB Host Controller
S: SerialNumber=Alaska Day 2006
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms
I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms
I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms
I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms
I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms
I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms
Signed-off-by: Cho, Yu-Chen <acho@suse.com>
cked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Cc: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Eran [Mon, 5 Dec 2011 22:15:29 +0000 (22:15 +0000)]
Bluetooth: Adding USB device 13d3:3375 as an Atheros AR3012.
commit
9498ba7a1d38d42eef4ef6d906ab1743c9f0fd6f upstream.
The bluetooth module in the Asus UX31/UX21 is based on Atheros AR3012
and requires a firmware to be uploaded before it's usable.
output of usb-devices for this module:
T: Bus=01 Lev=02 Prnt=02 Port=07 Cnt=03 Dev#= 6 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=13d3 ProdID=3375 Rev=00.02
S: Manufacturer=Atheros Communications
S: Product=Bluetooth USB Host Controller
S: SerialNumber=Alaska Day 2006
C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
Signed-off-by: Eran <eran@over-here.org>
Tested-by: Michal Labedzki <michal.labedzki@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Cc: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tomoya MORINAGA [Fri, 28 Oct 2011 00:35:21 +0000 (09:35 +0900)]
spi-topcliff-pch: Support new device LAPIS Semiconductor ML7831 IOH
commit
92b3a5c1bc3c7da1ae4675d014124f4a97ddb632 upstream.
ML7831 is companion chip for Intel Atom E6xx series.
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Danny Kukawka [Tue, 14 Feb 2012 14:35:03 +0000 (15:35 +0100)]
spi-topcliff-pch: fix -Wuninitialized warning
commit
de3bd7e6de25141c466773c2e0fa319b2fa93655 upstream.
Fix for:
drivers/spi/spi-topcliff-pch.c: In function ‘pch_spi_handler_sub’:
drivers/spi/spi-topcliff-pch.c:325:17: warning: ‘bpw_len’ may be
used uninitialized in this function [-Wuninitialized]
drivers/spi/spi-topcliff-pch.c:325:42: warning: ‘rx_index’ may be
used uninitialized in this function [-Wuninitialized]
drivers/spi/spi-topcliff-pch.c:325:42: warning: ‘tx_index’ may be
used uninitialized in this function [-Wuninitialized]
Move usage of tx_index, rx_index and bpw_len into the same
block as where they are set to prevent uninitialized usage.
v2: instead of init variables with 0 move the whole block
[This patch title "warnings" makes you think "This patch is not
for bug fix". However, this patch surely patch for bug fix.]
Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tomoya MORINAGA [Thu, 17 Nov 2011 07:14:23 +0000 (16:14 +0900)]
pch_dma: Support new device LAPIS Semiconductor ML7831 IOH
commit
ca7fe2db892dcf91b2c72ee352eda4ff867903a7 upstream.
ML7831 is companion chip for Intel Atom E6xx series.
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dan Carpenter [Wed, 29 Feb 2012 21:17:08 +0000 (21:17 +0000)]
pch_gbe: memory corruption calling pch_gbe_validate_option()
commit
73f98eab9b9e0bab492ca06add5657d9e702ddb1 upstream.
pch_gbe_validate_option() modifies 32 bits of memory but we pass
&hw->phy.autoneg_advertised which only has 16 bits and &hw->mac.fc
which only has 8 bits.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Darren Hart [Mon, 16 Jan 2012 09:50:19 +0000 (09:50 +0000)]
pch_gbe: Do not abort probe on bad MAC
commit
2b53d07891630dead46d65c8f896955fd3ae0302 upstream.
If the MAC is invalid or not implemented, do not abort the probe. Issue
a warning and prevent bringing the interface up until a MAC is set manually
(via ifconfig $IFACE hw ether $MAC).
Tested on two platforms, one with a valid MAC, the other without a MAC. The real
MAC is used if present, the interface fails to come up until the MAC is set on
the other. They successfully get an IP over DHCP and pass a simple ping and
login over ssh test.
This is meant to allow the Inforce SYS940X development board:
http://www.inforcecomputing.com/SYS940X_ECX.html
(and others suffering from a missing MAC) to work with the mainline kernel.
Without this patch, the probe will fail and the interface will not be created,
preventing the user from configuring the MAC manually.
This does not make any attempt to address a missing or invalid MAC for the
pch_phub driver.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
CC: Arjan van de Ven <arjan@linux.intel.com>
CC: Alan Cox <alan@linux.intel.com>
CC: Tomoya MORINAGA <tomoya.rohm@gmail.com>
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Paul Gortmaker <paul.gortmaker@windriver.com>
CC: Jon Mason <jdmason@kudzu.us>
CC: Mark Brown <broonie@opensource.wolfsonmicro.com>
CC: David Laight <David.Laight@ACULAB.COM>
CC: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jonghwan Choi [Wed, 18 Apr 2012 21:23:04 +0000 (17:23 -0400)]
security: fix compile error in commoncap.c
commit
51b79bee627d526199b2f6a6bef8ee0c0739b6d1 upstream.
Add missing "personality.h"
security/commoncap.c: In function 'cap_bprm_set_creds':
security/commoncap.c:510: error: 'PER_CLEAR_ON_SETID' undeclared (first use in this function)
security/commoncap.c:510: error: (Each undeclared identifier is reported only once
security/commoncap.c:510: error: for each function it appears in.)
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
Cc: Eric Paris <eparis@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Lin Ming [Mon, 28 Nov 2011 01:46:02 +0000 (09:46 +0800)]
ACPICA: Fix to allow region arguments to reference other scopes
commit
8931d9ea78848b073bf299594f148b83abde4a5e upstream.
Allow referenced objects to be in a different scope.
http://www.acpica.org/bugzilla/show_bug.cgi?id=937
http://marc.info/?l=linux-acpi&m=
131636632718222&w=2
ACPI Error: [RAMB] Namespace lookup failure, AE_NOT_FOUND (
20110112/psargs-359)
ACPI Exception: AE_NOT_FOUND, Could not execute arguments for [RAMW] (Region) (
20110112/nsinit-349)
Scope (_SB)
{
Name (RAMB, 0xDF5A1018)
OperationRegion (\RAMW, SystemMemory, RAMB, 0x00010000)
}
For above ASL code, we need to save scope node(\_SB) to lookup
the argument node(\_SB.RAMB).
Reported-by: Jim Green <student.northwestern@gmail.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Cc: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tomoya MORINAGA [Thu, 12 Jan 2012 02:27:09 +0000 (11:27 +0900)]
usb: gadget: pch_udc: Reduce redundant interrupt
commit
833310402c54ad9b676b465fc53ad276b13d36be upstream.
ISSUE:
USB Suspend interrupts occur frequently.
CAUSE:
When it is called pch_udc_reconnect() in USB Suspend, it repeats reset and
Suspend.
SOLUTION:
pch_udc_reconnect() does not enable all interrupts. When an enumeration event
occurred the driver enables all interrupts.
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tomoya MORINAGA [Thu, 12 Jan 2012 02:27:08 +0000 (11:27 +0900)]
usb: gadget: pch_udc: Fix usb/gadget/pch_udc: Fix ether gadget connect/disconnect issue
commit
1c575d2d2e3ff2a7cb3c2e2165064199cfd8ad32 upstream.
ISSUE:
After a USB cable is connect/disconnected, the system rarely freezes.
CAUSE:
Since the USB device controller cannot know to disconnect the USB cable, when
it is used without detecting VBUS by GPIO, the UDC driver does not notify to
USB Gadget.
Since USB Gadget cannot know to disconnect, a false setting occurred when the
USB cable is connected/disconnect repeatedly.
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>