[PATCH] phy: mediatek: Fix missing check in mtk_mipi_tx_probe

[Miaoqian Lin]

The of_device_get_match_data() function may return NULL.
Add check to prevent potential null dereference.

Signed-off-by: Miaoqian Lin <linmq...@gmail.com>
---
 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 28ad9403c441..67b005d5b9e3 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))
-- 
2.17.1