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mtd: sharpslpart: Fix unsigned comparison to zero

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commit f33113b542219448fa02d77ca1c6f4265bd7f130 upstream.

The unsigned variable log_num is being assigned a return value
from the call to sharpsl_nand_get_logical_num that can return
-EINVAL.

Detected using Coccinelle:
./drivers/mtd/parsers/sharpslpart.c:207:6-13: WARNING: Unsigned expression compared with zero: log_num > 0

Fixes: 8a4580e4d2 ("mtd: sharpslpart: Add sharpslpart partition parser")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
YueHaibing 2019-12-30 11:29:45 +08:00 • committed by Greg Kroah-Hartman
commit 771fd0b2e8
1 changed files with 2 additions and 2 deletions
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4
drivers/mtd/parsers/sharpslpart.c
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@ -165,10 +165,10 @@ static int sharpsl_nand_get_logical_num(u8 *oob)
static int sharpsl_nand_init_ftl(struct mtd_info *mtd, struct sharpsl_ftl *ftl)
{
unsigned int block_num, log_num, phymax;
unsigned int block_num, phymax;
int i, ret, log_num;
loff_t block_adr;
u8 *oob;
int i, ret;
oob = kzalloc(mtd->oobsize, GFP_KERNEL);
if (!oob)