From: Allen Pan <allen....@amd.com>
[How]
Check wheather state is NULL before releasing it.
Cc: Mario Limonciello <mario.limoncie...@amd.com>
Cc: Alex Deucher <alexander.deuc...@amd.com>
Cc: sta...@vger.kernel.org
Reviewed-by: Charlene Liu <charlene....@amd.com>
Acked-by: Alex Hung <alex.h...@amd.com>
Signed-off-by: Allen Pan <allen....@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_state.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_state.c
b/drivers/gpu/drm/amd/display/dc/core/dc_state.c
index 180ac47868c2..5cc7f8da209c 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_state.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_state.c
@@ -334,7 +334,8 @@ static void dc_state_free(struct kref *kref)
void dc_state_release(struct dc_state *state)
{
- kref_put(&state->refcount, dc_state_free);
+ if (state != NULL)
+ kref_put(&state->refcount, dc_state_free);
}
/*
* dc_state_add_stream() - Add a new dc_stream_state to a dc_state.
--
2.34.1
