lkml.org 
[lkml]   [2022]   [Jan]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH AUTOSEL 5.15 42/44] phy: mediatek: Fix missing check in mtk_mipi_tx_probe
Date
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))
--
2.34.1
\
 
 \ /
  Last update: 2022-01-17 18:10    [W:0.111 / U:0.352 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site