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drm/panel: magnachip: Prevent error pointer dereference in probe 

Don't dereference "db->dsi_dev" when it is an error pointer.

Fixes: 249a4f5e66 ("drm/panel: Add Magnachip D53E6EA8966 Panel Driver")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/de0273a8-8910-4ac4-b4ed-f7691c4d2ca6@kili.mountain
This commit is contained in:
Dan Carpenter 2023-03-22 12:07:10 +03:00 committed by Linus Walleij
parent bd2eefd018
commit 14302ab0d6
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/panel/panel-magnachip-d53e6ea8966.c
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@ -418,7 +418,7 @@ static int d53e6ea8966_probe(struct spi_device *spi)
if (IS_ERR(db->dsi_dev)) {
dev_err(dev, "failed to register dsi device: %ld\n",
PTR_ERR(db->dsi_dev));
ret = PTR_ERR(db->dsi_dev);
return PTR_ERR(db->dsi_dev);
}
db->dsi_dev->lanes = 2;