Rafael J. Wysocki 5781b53dd8 driver core: Add missing dev->bus->need_parent_lock checks
commit e121a83374 upstream.

__device_release_driver() has to check dev->bus->need_parent_lock
before dropping the parent lock and acquiring it again as it may
attempt to drop a lock that hasn't been acquired or lock a device
that shouldn't be locked and create a lock imbalance.

Fixes: 8c97a46af0 (driver core: hold dev's parent lock when needed)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-13 09:51:06 +01:00
2018-12-19 19:19:50 +01:00
2019-01-09 17:38:45 +01:00
2019-01-13 09:51:05 +01:00
2019-01-13 09:50:57 +01:00

Linux kernel
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