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phy: mediatek: Fix missing check in mtk_mipi_tx_probe

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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>
This commit is contained in:
Miaoqian Lin 2021-12-24 08:21:03 +00:00 committed by Vinod Koul
parent 898c7a9ec8
commit 399c91c3f3
1 changed files with 2 additions and 0 deletions
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drivers/phy/mediatek/phy-mtk-mipi-dsi.c
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@ -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))