linux-toradex.git/drivers/acpi/sysfs.c, branch v3.11 Linux kernel for Apalis and Colibri modules Merge branch 'akpm' (updates from Andrew Morton) 2013-07-04T00:12:13+00:00 Linus Torvalds torvalds@linux-foundation.org 2013-07-04T00:12:13+00:00 7f0ef0267e20d62d45d527911a993b1e998f4968 Merge first patch-bomb from Andrew Morton: - various misc bits - I'm been patchmonkeying ocfs2 for a while, as Joel and Mark have been distracted. There has been quite a bit of activity. - About half the MM queue - Some backlight bits - Various lib/ updates - checkpatch updates - zillions more little rtc patches - ptrace - signals - exec - procfs - rapidio - nbd - aoe - pps - memstick - tools/testing/selftests updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (445 commits) tools/testing/selftests: don't assume the x bit is set on scripts selftests: add .gitignore for kcmp selftests: fix clean target in kcmp Makefile selftests: add .gitignore for vm selftests: add hugetlbfstest self-test: fix make clean selftests: exit 1 on failure kernel/resource.c: remove the unneeded assignment in function __find_resource aio: fix wrong comment in aio_complete() drivers/w1/slaves/w1_ds2408.c: add magic sequence to disable P0 test mode drivers/memstick/host/r592.c: convert to module_pci_driver drivers/memstick/host/jmb38x_ms: convert to module_pci_driver pps-gpio: add device-tree binding and support drivers/pps/clients/pps-gpio.c: convert to module_platform_driver drivers/pps/clients/pps-gpio.c: convert to devm_* helpers drivers/parport/share.c: use kzalloc Documentation/accounting/getdelays.c: avoid strncpy in accounting tool aoe: update internal version number to v83 aoe: update copyright date aoe: perform I/O completions in parallel ... 
Merge first patch-bomb from Andrew Morton:
 - various misc bits
 - I'm been patchmonkeying ocfs2 for a while, as Joel and Mark have been
   distracted.  There has been quite a bit of activity.
 - About half the MM queue
 - Some backlight bits
 - Various lib/ updates
 - checkpatch updates
 - zillions more little rtc patches
 - ptrace
 - signals
 - exec
 - procfs
 - rapidio
 - nbd
 - aoe
 - pps
 - memstick
 - tools/testing/selftests updates

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (445 commits)
  tools/testing/selftests: don't assume the x bit is set on scripts
  selftests: add .gitignore for kcmp
  selftests: fix clean target in kcmp Makefile
  selftests: add .gitignore for vm
  selftests: add hugetlbfstest
  self-test: fix make clean
  selftests: exit 1 on failure
  kernel/resource.c: remove the unneeded assignment in function __find_resource
  aio: fix wrong comment in aio_complete()
  drivers/w1/slaves/w1_ds2408.c: add magic sequence to disable P0 test mode
  drivers/memstick/host/r592.c: convert to module_pci_driver
  drivers/memstick/host/jmb38x_ms: convert to module_pci_driver
  pps-gpio: add device-tree binding and support
  drivers/pps/clients/pps-gpio.c: convert to module_platform_driver
  drivers/pps/clients/pps-gpio.c: convert to devm_* helpers
  drivers/parport/share.c: use kzalloc
  Documentation/accounting/getdelays.c: avoid strncpy in accounting tool
  aoe: update internal version number to v83
  aoe: update copyright date
  aoe: perform I/O completions in parallel
  ...
clean up scary strncpy(dst, src, strlen(src)) uses 2013-07-03T23:07:41+00:00 Kees Cook keescook@chromium.org 2013-07-03T22:04:55+00:00 096a8aac6bf4a5a0b2ef812ad76d056bbf3fb2af Fix various weird constructions of strncpy(dst, src, strlen(src)). Length limits should be about the space available in the destination, not repurposed as a method to either always include or always exclude a trailing NULL byte. Either the NULL should always be copied (using strlcpy), or it should not be copied (using something like memcpy). Readable code should not depend on the weird behavior of strncpy when it hits the length limit. Better to avoid the anti-pattern entirely. [akpm@linux-foundation.org: revert getdelays.c part due to missing bsd/string.h] Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> [staging] Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> [acpi] Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ursula Braun <ursula.braun@de.ibm.com> Cc: Frank Blaschka <blaschka@linux.vnet.ibm.com> Cc: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Fix various weird constructions of strncpy(dst, src, strlen(src)).

Length limits should be about the space available in the destination,
not repurposed as a method to either always include or always exclude a
trailing NULL byte.  Either the NULL should always be copied (using
strlcpy), or it should not be copied (using something like memcpy).
Readable code should not depend on the weird behavior of strncpy when it
hits the length limit.  Better to avoid the anti-pattern entirely.

[akpm@linux-foundation.org: revert getdelays.c part due to missing bsd/string.h]
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	[staging]
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>	[acpi]
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ursula Braun <ursula.braun@de.ibm.com>
Cc: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Cc: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
ACPI / hotplug: Use device offline/online for graceful hot-removal 2013-05-12T12:14:24+00:00 Rafael J. Wysocki rafael.j.wysocki@intel.com 2013-05-02T22:26:16+00:00 683058e315f00a216fd6c79df4f63bc9945ca434 Modify the generic ACPI hotplug code to be able to check if devices scheduled for hot-removal may be gracefully removed from the system using the device offline/online mechanism introduced previously. Namely, make acpi_scan_hot_remove() handling device hot-removal call device_offline() for all physical companions of the ACPI device nodes involved in the operation and check the results. If any of the device_offline() calls fails, the function will not progress to the removal phase (which cannot be aborted), unless its (new) force argument is set (in case of a failing offline it will put the devices offlined by it back online). In support of 'forced' device hot-removal, add a new sysfs attribute 'force_remove' that will reside under /sys/firmware/acpi/hotplug/. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Toshi Kani <toshi.kani@hp.com> 
Modify the generic ACPI hotplug code to be able to check if devices
scheduled for hot-removal may be gracefully removed from the system
using the device offline/online mechanism introduced previously.

Namely, make acpi_scan_hot_remove() handling device hot-removal call
device_offline() for all physical companions of the ACPI device nodes
involved in the operation and check the results.  If any of the
device_offline() calls fails, the function will not progress to the
removal phase (which cannot be aborted), unless its (new) force
argument is set (in case of a failing offline it will put the devices
offlined by it back online).

In support of 'forced' device hot-removal, add a new sysfs attribute
'force_remove' that will reside under /sys/firmware/acpi/hotplug/.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Toshi Kani <toshi.kani@hp.com>
ACPI / hotplug: Make acpi_hotplug_profile_ktype static 2013-03-18T23:16:15+00:00 Rafael J. Wysocki rafael.j.wysocki@intel.com 2013-03-18T23:16:15+00:00 b09753ec80914424527955147c359e9ac3a87682 The acpi_hotplug_profile_ktype object should be static, so make that be the case. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 
The acpi_hotplug_profile_ktype object should be static, so make that
be the case.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPI / hotplug: Introduce user space interface for hotplug profiles 2013-03-04T13:25:32+00:00 Rafael J. Wysocki rafael.j.wysocki@intel.com 2013-03-03T22:08:16+00:00 3f8055c3583640ed3e4c81864dd76e06a7faa505 Introduce user space interface for manipulating hotplug profiles associated with ACPI scan handlers. The interface consists of sysfs directories under /sys/firmware/acpi/hotplug/, one for each hotplug profile, containing an attribute allowing user space to manipulate the enabled field of the corresponding profile. Namely, switching the enabled attribute from '0' to '1' will cause the common hotplug notify handler to be installed for all ACPI namespace objects representing devices matching the scan handler associated with the given hotplug profile (and analogously for the converse switch). Drivers willing to use the new user space interface should add their ACPI scan handlers with the help of new funtion acpi_scan_add_handler_with_hotplug(). Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Toshi Kani <toshi.kani@hp.com> Tested-by: Toshi Kani <toshi.kani@hp.com> 
Introduce user space interface for manipulating hotplug profiles
associated with ACPI scan handlers.

The interface consists of sysfs directories under
/sys/firmware/acpi/hotplug/, one for each hotplug profile, containing
an attribute allowing user space to manipulate the enabled field of
the corresponding profile.  Namely, switching the enabled attribute
from '0' to '1' will cause the common hotplug notify handler to be
installed for all ACPI namespace objects representing devices matching
the scan handler associated with the given hotplug profile (and
analogously for the converse switch).

Drivers willing to use the new user space interface should add their
ACPI scan handlers with the help of new funtion
acpi_scan_add_handler_with_hotplug().

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Tested-by: Toshi Kani <toshi.kani@hp.com>
ACPI sysfs: remove unnecessary newline from exception 2013-01-25T23:34:21+00:00 Colin Ian King colin.king@canonical.com 2012-11-29T11:53:14+00:00 c628423777d9df5e48ea8c5695aacd105cf4f768 ACPI_EXCEPTION() already appends a newline, so there is no need for the invalid GPE message to include one too. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 
ACPI_EXCEPTION() already appends a newline, so there is no
need for the invalid GPE message to include one too.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPICA: Fix AcpiSrc caused divergences. 2012-11-14T23:31:23+00:00 Lv Zheng lv.zheng@intel.com 2012-10-31T02:25:36+00:00 644ef74e6d187ca2e8a23ff41a513964de36f93e There are definitions that can been converted into new styles by the recent AcpiSrc while they remain the old styles in the Linux. This patch fixes those definitions that will be converted by the AcpiSrc. This patch will not affect the generated vmlinux binary. This will decrease 97 lines of 20120913 divergence.diff. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 
There are definitions that can been converted into new styles by
the recent AcpiSrc while they remain the old styles in the Linux.
This patch fixes those definitions that will be converted by the
AcpiSrc.

This patch will not affect the generated vmlinux binary.
This will decrease 97 lines of 20120913 divergence.diff.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPI: replace strlen("string") with sizeof("string") -1 2012-07-27T01:35:28+00:00 Len Brown len.brown@intel.com 2012-07-27T01:32:01+00:00 869639f9e7ff5ca337b27469c298dd11c29cf0fa ...both give the number of chars in the string without the '\0', as strncmp() wants, but sizeof() is compile-time. Reported-by: Alan Stern <stern@rowland.harvard.edu> Cc: Pavel Vasilyev <pavel@pavlinux.ru> Signed-off-by: Len Brown <len.brown@intel.com> 
...both give the number of chars in the string
without the '\0', as strncmp() wants,
but sizeof() is compile-time.

Reported-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Pavel Vasilyev <pavel@pavlinux.ru>
Signed-off-by: Len Brown <len.brown@intel.com>
ACPI sysfs.c strlen fix 2012-06-05T04:02:05+00:00 Pavel Vasilyev pavel@pavlinux.ru 2012-06-05T04:02:05+00:00 9f132652d94c96476b0b0a8caf0c10e96ab10fa8 Current code is ignoring the last character of "enable" and "disable" in comparisons. https://bugzilla.kernel.org/show_bug.cgi?id=33732 Signed-off-by: Len Brown <len.brown@intel.com> 
Current code is ignoring the last character of "enable" and "disable"
in comparisons.

https://bugzilla.kernel.org/show_bug.cgi?id=33732

Signed-off-by: Len Brown <len.brown@intel.com>
ACPI: Export FADT pm_profile integer value to userspace 2011-11-07T01:48:42+00:00 Thomas Renninger trenn@suse.de 2011-11-04T02:33:46+00:00 362b646062b2073bd5c38efb42171d86e4f717e6 There are a lot userspace approaches to detect the usage of the platform (laptop, workstation, server, ...) and adjust kernel tunables accordingly (io/process scheduler, power management, ...). These approaches need constant maintaining and are ugly to implement (detect PCMCIA controller -> laptop, does not work on recent systems anymore, ...) On ACPI systems there is an easy and reliable way (if implemented in BIOS and most recent platforms have this value set). -> export it to userspace. Signed-off-by: Thomas Renninger <trenn@suse.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com> 
There are a lot userspace approaches to detect the usage of the
platform (laptop, workstation, server, ...) and adjust kernel tunables
accordingly (io/process scheduler, power management, ...).

These approaches need constant maintaining and are ugly to implement
(detect PCMCIA controller -> laptop,
does not work on recent systems anymore, ...)
On ACPI systems there is an easy and reliable way (if implemented
in BIOS and most recent platforms have this value set).
-> export it to userspace.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>