]> git.baikalelectronics.ru Git - kernel.git/commit
driver core: Add missing dev->bus->need_parent_lock checks
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>
Thu, 13 Dec 2018 18:27:47 +0000 (19:27 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 19 Dec 2018 09:08:34 +0000 (10:08 +0100)
commit6c59fe27a38d4444e1c1b939f9927894c279d61f
tree257a38b7dab8b8b141c12d0a28cc7524f5320871
parent918d889b23fcb74812df8719e187a7a234d39e4c
driver core: Add missing dev->bus->need_parent_lock checks

__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: c63bf84b3466 (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>
drivers/base/dd.c