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mtd: maps: fix error return code of physmap_flash_remove()

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[ Upstream commit 620b90d30c ]

When platform_get_drvdata() returns NULL to info, no error return code
of physmap_flash_remove() is assigned.
To fix this bug, err is assigned with -EINVAL in this case

Fixes: 73566edf9b ("[MTD] Convert physmap to platform driver")
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210308034446.3052-1-baijiaju1990@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jia-Ju Bai 2021-03-07 19:44:46 -08:00 • committed by Greg Kroah-Hartman
commit 5133b4bdc9
1 changed files with 3 additions and 1 deletions
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4
drivers/mtd/maps/physmap-core.c
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@ -69,8 +69,10 @@ static int physmap_flash_remove(struct platform_device *dev)
int i, err = 0;
info = platform_get_drvdata(dev);
if (!info)
if (!info) {
err = -EINVAL;
goto out;
}
if (info->cmtd) {
err = mtd_device_unregister(info->cmtd);