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authorRafael J. Wysocki <rjw@sisk.pl>2010-03-04 01:52:58 +0100
committerLen Brown <len.brown@intel.com>2010-03-08 14:15:51 -0500
commitf6bb13aa1ea3bb26a4c783822347873f085b9000 (patch)
treee0350530685e0719d4318f052982aa4340a00650 /drivers/acpi/thermal.c
parent60b341b778cc2929df16c0a504c91621b3c6a4ad (diff)
downloadlinux-f6bb13aa1ea3bb26a4c783822347873f085b9000.tar.bz2
ACPI / EC / PM: Close race between EC and resume from hibernation
There is a race between resume from hibernation and the EC driver that may result in restoring the hibernation image in the middle of an EC transaction in progress, which in turn may lead to unpredictable behavior of the platform. To remove that race condition, add a helpers for suspending and resuming EC transactions in a safe way to be executed by the ACPI platform hibernate pre-restore and restore cleanup callbacks. http://bugzilla.kernel.org/show_bug.cgi?id=14668 Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Reported-and-tested-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/thermal.c')
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