Add check for the return value of komeda_get_layer_fourcc_list() to catch the potential exception.

Fixes: 5d51f6c0da1b ("drm/komeda: Add writeback support") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li haoxiang_li2024@163.com --- drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c b/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c index ebccb74306a7..f30b3d5eeca5 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c @@ -160,6 +160,10 @@ static int komeda_wb_connector_add(struct komeda_kms_dev *kms, formats = komeda_get_layer_fourcc_list(&mdev->fmt_tbl, kwb_conn->wb_layer->layer_type, &n_formats); + if (!formats) { + kfree(kwb_conn); + return -ENOMEM; + }

err = drm_writeback_connector_init(&kms->base, wb_conn, &komeda_wb_connector_funcs,