[ Upstream commit 8f3b487685b2acf71b42bb30d68fd9271bec8695 ] When Daniel removed struct_mutex he didn't fix this call to the unlocked variant which is required since we no longer use struct mutex. This fixes a bunch of: WARNING: CPU: 4 PID: 1370 at drivers/gpu/drm/drm_gem.c:931 drm_gem_object_put+0x2b/0x30 [drm] Modules linked in: udl xt_CHECKSUM ipt_MASQUERADE tun bridge stp llc nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t> CPU: 4 PID: 1370 Comm: Xorg Not tainted 5.0.0+ #2 backtraces when you plug in a udl device. Fixes: ae358dacd217 (drm/udl: Get rid of dev->struct_mutex usage) Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx> Cc: Sean Paul <seanpaul@xxxxxxxxxxxx> Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/gpu/drm/udl/udl_gem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c index d5a23295dd80..bb7b58407039 100644 --- a/drivers/gpu/drm/udl/udl_gem.c +++ b/drivers/gpu/drm/udl/udl_gem.c @@ -224,7 +224,7 @@ int udl_gem_mmap(struct drm_file *file, struct drm_device *dev, *offset = drm_vma_node_offset_addr(&gobj->base.vma_node); out: - drm_gem_object_put(&gobj->base); + drm_gem_object_put_unlocked(&gobj->base); unlock: mutex_unlock(&udl->gem_lock); return ret; -- 2.19.1
