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| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2022-01-05 10:47:29 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-13 21:59:16 +0300 |
| commit | c1e96348dbeb1820d366c7a459a6f3fa2dc3e32e (patch) | |
| tree | 787d90812d9e21d40cc755196846ecd8a8525767 /drivers/gpu/drm | |
| parent | 47fec6139b5e5acce40904609864debef38f20a3 (diff) | |
| download | linux-c1e96348dbeb1820d366c7a459a6f3fa2dc3e32e.tar.xz | |
drm/imx: imx-ldb: Check for null pointer after calling kmemdup
[ Upstream commit 8027a9ad9b3568c5eb49c968ad6c97f279d76730 ]
As the possible failure of the allocation, kmemdup() may return NULL
pointer.
Therefore, it should be better to check the return value of kmemdup()
and return error if fails.
Fixes: dc80d7038883 ("drm/imx-ldb: Add support to drm-bridge")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20220105074729.2363657-1-jiasheng@iscas.ac.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/imx/imx-ldb.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c index e5078d03020d..fb0e951248f6 100644 --- a/drivers/gpu/drm/imx/imx-ldb.c +++ b/drivers/gpu/drm/imx/imx-ldb.c @@ -572,6 +572,8 @@ static int imx_ldb_panel_ddc(struct device *dev, edidp = of_get_property(child, "edid", &edid_len); if (edidp) { channel->edid = kmemdup(edidp, edid_len, GFP_KERNEL); + if (!channel->edid) + return -ENOMEM; } else if (!channel->panel) { /* fallback to display-timings node */ ret = of_get_drm_display_mode(child, |