From: Miaoqian Lin linmq006@gmail.com

[ 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@gmail.com Reviewed-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com Link: https://lore.kernel.org/r/20211224082103.7658-1-linmq006@gmail.com Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/phy/mediatek/phy-mtk-mipi-dsi.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi.c b/drivers/phy/mediatek/phy-mtk-mipi-dsi.c index 28ad9403c4414..67b005d5b9e35 100644 --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi.c +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi.c @@ -146,6 +146,8 @@ 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;

mipi_tx->regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(mipi_tx->regs))