Rafael J. Wysocki 884b821fa2 ACPI: Fix acpi_os_read_memory() and acpi_os_write_memory() (v2) ... The functions acpi_os_read_memory() and acpi_os_write_memory() do two wrong things. First, they shouldn't call rcu_read_unlock() before the looked up address is actually used for I/O, because in that case the iomap it belongs to may be removed before the I/O is done. Second, if they have to create a new mapping, they should check the returned virtual address and tell the caller that the operation failed if it is NULL (in fact, I think they even should not attempt to map an address that's not present in one of the existing ACPI iomaps, because that may cause problems to happen when they are called from nonpreemptible context and their callers ought to know what they are doing and map the requisite memory regions beforehand). Make these functions call rcu_read_unlock() when the I/O is complete (or if it's necessary to map the given address "on the fly") and return an error code if the requested physical address is not present in the existing ACPI iomaps and cannot be mapped. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>		2011-02-08 23:37:16 +01:00
..
acpica	Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2011-01-20 16:28:34 -08:00
apei	ACPI: Fix boot problem related to APEI with acpi_disabled set	2011-01-16 11:56:26 -08:00
ac.c	Merge branch 'procfs-cleanup' into release	2011-01-12 05:00:07 -05:00
acpi_ipmi.c	IPMI/ACPI: Add the IPMI opregion driver to enable ACPI to access BMC controller	2010-12-14 00:22:14 -05:00
acpi_memhotplug.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
acpi_pad.c	Merge branch 'x86-idle-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-21 13:45:38 -07:00
atomicio.c	ACPI, APEI, Fix acpi_pre_map() return value	2010-09-29 14:02:16 -04:00
battery.c	ACPI / Battery: remove battery refresh on resume	2011-01-20 13:14:10 -08:00
blacklist.c	Merge branch 'msi-dmi' into release	2010-10-08 22:37:46 -04:00
bus.c	ACPI / PM: Drop acpi_power_nocheck	2011-01-12 04:48:45 -05:00
button.c	ACPI / PM: Report wakeup events from buttons	2011-01-07 01:18:16 -05:00
cm_sbs.c	ACPI: Move definition of PREFIX from acpi_bus.h to internal..h	2009-08-28 19:57:27 -04:00
container.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
debugfs.c	ACPI: debugfs custom_method open to non-root	2010-11-13 09:52:16 -08:00
dock.c	ACPICA: Rename some function and variable names	2011-01-12 04:24:40 -05:00
ec_sys.c	llseek: automatically add .llseek fop	2010-10-15 15:53:27 +02:00
ec.c	ACPICA: Implicit notify support	2011-01-12 04:27:00 -05:00
event.c	llseek: automatically add .llseek fop	2010-10-15 15:53:27 +02:00
fan.c	ACPI / Fan: Rework the handling of power resources	2011-01-12 04:48:45 -05:00
glue.c	ACPI / PM: Drop special ACPI wakeup flags	2011-01-07 01:18:00 -05:00
hed.c	ACPI Hardware Error Device (PNP0C33) support	2010-05-19 22:40:24 -04:00
internal.h	Merge branch 'suspend-ioremap-cache' into release	2011-01-12 16:11:46 -05:00
Kconfig	kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT	2011-01-20 17:02:05 -08:00
Makefile	Merge branch 'ipmi' into release	2011-01-12 05:03:13 -05:00
numa.c	x86, ia64, acpi: Clean up x86-ism in drivers/acpi/numa.c	2011-01-12 12:15:09 +01:00
nvs.c	ACPI: Introduce acpi_os_ioremap()	2011-01-20 18:30:17 -08:00
osl.c	ACPI: Fix acpi_os_read_memory() and acpi_os_write_memory() (v2)	2011-02-08 23:37:16 +01:00
pci_bind.c	PCI / ACPI / PM: Platform support for PCI PME wake-up	2010-02-22 16:21:02 -08:00
pci_irq.c	ACPI: remove unused declaration of proc_fs.h	2010-10-15 22:03:36 -04:00
pci_link.c	ACPI: remove unused declaration of proc_fs.h	2010-10-15 22:03:36 -04:00
pci_root.c	ACPI: Fix boot problem related to APEI with acpi_disabled set	2011-01-16 11:56:26 -08:00
pci_slot.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
power_meter.c	power_meter: acpi_device_class "power_meter_resource" too long	2010-05-06 02:38:24 -04:00
power.c	ACPI / PM: Check status of power resources under mutexes	2011-01-12 05:05:39 -05:00
proc.c	ACPI / PM: Use device wakeup flags for handling ACPI wakeup devices	2011-01-07 01:17:41 -05:00
processor_core.c	ACPI, intel_idle: Cleanup idle= internal variables	2011-01-12 12:47:30 -05:00
processor_driver.c	Merge branch 'throttling' into release	2011-01-12 05:01:08 -05:00
processor_idle.c	Merge branch 'linus' into idle-test	2011-01-12 18:06:06 -05:00
processor_perflib.c	ACPI: Fix typos	2010-09-28 21:38:19 -04:00
processor_thermal.c	ACPI thermal: remove two unused functions	2010-12-11 02:01:47 -05:00
processor_throttling.c	Merge branch 'throttling' into release	2011-01-12 05:01:08 -05:00
reboot.c
sbs.c	ACPI: delete CONFIG_ACPI_PROCFS_POWER and power procfs I/F in 2.6.39	2011-01-12 00:36:17 -05:00
sbshc.c	sbshc: acpi_device_class "smbus_host_controller" too long	2010-05-06 02:38:25 -04:00
sbshc.h
scan.c	ACPI: Drop device flag wake_capable	2011-01-12 05:06:01 -05:00
sleep.c	ACPI / PM: Call suspend_nvs_free() earlier during resume	2011-01-20 18:30:17 -08:00
sleep.h	ACPI: static sleep_states[] and acpi_gts_bfs_check	2010-10-19 13:44:37 -04:00
sysfs.c	ACPICA: Global event handler	2011-01-12 04:27:00 -05:00
tables.c	ACPI: delete the "acpi=ht" boot option	2010-03-14 20:58:38 -04:00
thermal.c	ACPI / Fan: Rework the handling of power resources	2011-01-12 04:48:45 -05:00
utils.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
video_detect.c	ACPI video: remove output switching control	2010-12-14 00:04:52 -05:00
video.c	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2011-01-13 20:15:35 -08:00
wakeup.c	Merge branch 'wakeup-etc-rafael' into release	2011-01-12 04:55:46 -05:00