From: Miaoqian Lin <linmq006@xxxxxxxxx> [ Upstream commit 399c91c3f30531593e5ff6ca7b53f47092128669 ] The of_device_get_match_data() function may return NULL. Add check to prevent potential null dereference. Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20211224082103.7658-1-linmq006@xxxxxxxxx Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/gpu/drm/mediatek/mtk_mipi_tx.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c index 8cee2591e7284..ccc742dc78bd9 100644 --- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c +++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c @@ -147,6 +147,8 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev) return -ENOMEM; mipi_tx->driver_data = of_device_get_match_data(dev); + if (!mipi_tx->driver_data) + return -ENODEV; mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); mipi_tx->regs = devm_ioremap_resource(dev, mem); -- 2.34.1
