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authorGravatar Rafael J. Wysocki <rafael.j.wysocki@intel.com> 2019-12-27 11:04:21 +0100
committerGravatar Rafael J. Wysocki <rafael.j.wysocki@intel.com> 2019-12-27 11:04:21 +0100
commit3df663a147fe077a6ee8444ec626738946e65547 (patch)
tree1059c7bd9be1c08fa5ffc7d058613c47de7df0c7 /tools
parentLinux 5.5-rc3 (diff)
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ACPI: EC: Reference count query handlers under lock
There is a race condition in acpi_ec_get_query_handler() theoretically allowing query handlers to go away before refernce counting them. In order to avoid it, call kref_get() on query handlers under ec->mutex. Also simplify the code a bit while at it. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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