| commit | 5781b53dd89c1034daa0929fe98f87f87d1af914 | |
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | |
| Thu, 13 Dec 2018 18:27:47 +0000 (13 19:27 +0100) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Sun, 13 Jan 2019 08:51:06 +0000 (13 09:51 +0100) | ||
| tree | 6f3e6a5c3f884ca06991581aeb169abbb1f26aee | treesnapshot (tar.gz zip) |
| parent | b57b3b00828467b922838731827385174ae9a9c9 | commitdiff |
driver core: Add missing dev->bus->need_parent_lock checks
commit e121a833745b4708b660e3fe6776129c2956b041 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: 8c97a46af04b (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>
commit e121a833745b4708b660e3fe6776129c2956b041 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: 8c97a46af04b (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 | diffblobblamehistory |