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path: root/drivers/acpi/proc.c
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2009-10-28ACPI: clean up video.c boundary checks and typesArjan van de Ven
proc.c and video.c are a bit sloppy around types and style, confusing gcc for a new feature that'll be in 2.6.33 and will cause a warning on the current code. This patch changes if (foo + 1 > sizeof bar) into if (foo >= sizeof(bar)) which is more kernel-style. it also changes a variable in proc.c to unsigned; it gets assigned a value from an unsigned type, and is then only compared for > not for negative, so using unsigned is just outright the right type Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-10-03ACPI: Fix bound checks for copy_from_user in the acpi /proc codeArjan van de Ven
The ACPI /proc write() code takes an unsigned length argument like any write() function, but then assigned it to a *signed* integer called "len". Only after this is a sanity check for len done to make it not larger than 4. Due to the type change a len < 0 is in principle also possible; this patch adds a check for this. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-04-07ACPI: convert acpi_device_lock spinlock to mutexShaohua Li
Convert acpi_device_lock to a mutex to avoid a potential race upon access to /proc/acpi/wakeup Delete the lock entirely in wakeup.c since it is not necessary (and can not sleep) Found-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27ACPI: call acpi_sleep_proc_init() explicitly rather than as initcallBjorn Helgaas
This patch makes acpi_init() call acpi_sleep_proc_init() directly. Previously, acpi_sleep_proc_init() was a late_initcall (sequence 7), apparently to make sure that the /proc hierarchy already exists: 2003/02/13 12:38:03-06:00 mochel acpi sleep: demote sleep proc file creation. - Make acpi_sleep_proc_init() a late_initcall(), and not called from acpi_sleep_init(). This guarantees that the acpi proc hierarchy is at least there when we create the dang file. This should no longer be an issue because acpi_bus_init() (called early in acpi_init()) creates acpi_root_dir (/proc/acpi). Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-09Merge branch 'alarm' into releaseLen Brown
2009-01-09ACPICA: create acpica/ directoryLen Brown
also, delete sleep/ and delete ACPI_CFLAGS from Makefile Signed-off-by: Len Brown <len.brown@intel.com>