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authorDmitry Osipenko <dmitry.osipenko@collabora.com>2022-06-30 23:04:04 +0300
committerDaniel Vetter <daniel.vetter@ffwll.ch>2022-08-09 18:43:28 +0200
commit2939deac1fa220bc82b89235f146df1d9b52e876 (patch)
tree1d98f32b7cc2b0fca0bd8c9cc36b483309d684aa /README
parentdf4aaf015775221dde8a51ee09edb919981f091e (diff)
drm/gem: Properly annotate WW context on drm_gem_lock_reservations() error
Use ww_acquire_fini() in the error code paths. Otherwise lockdep thinks that lock is held when lock's memory is freed after the drm_gem_lock_reservations() error. The ww_acquire_context needs to be annotated as "released", which fixes the noisy "WARNING: held lock freed!" splat of VirtIO-GPU driver with CONFIG_DEBUG_MUTEXES=y and enabled lockdep. Cc: stable@vger.kernel.org Fixes: 7edc3e3b975b5 ("drm: Add helpers for locking an array of BO reservations.") Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20220630200405.1883897-2-dmitry.osipenko@collabora.com
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