diff options
| author | Gustavo A. R. Silva <gustavo@embeddedor.com> | 2018-10-10 17:58:58 +0200 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2018-11-05 10:56:58 +0100 |
| commit | 41d6f0d07d76257cf2d39071a439c7dd1da7271e (patch) | |
| tree | b664b97cc90375a819d6742a66df2feda8bea96c /drivers/mtd/nand/raw/fsmc_nand.c | |
| parent | 9a4d83074769d6ecf1f5c3fef0f183b09abf3726 (diff) | |
mtd: rawnand: fsmc: Fix unchecked return value in fsmc_read_page_hwecc
Check return value of nand_read_data_op.
Notice that, currently, all instances of nand_read_data_op() are
being checked, with the exception of two of them in marvell_nand
driver, in which the caller function explicitly returns 0 every
time.
Also, notice that I moved the declaration of *ret* to the top of
fsmc_read_page_hwecc().
Addresses-Coverity-ID: 1471968 ("Unchecked return value")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Diffstat (limited to 'drivers/mtd/nand/raw/fsmc_nand.c')
| -rw-r--r-- | drivers/mtd/nand/raw/fsmc_nand.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/mtd/nand/raw/fsmc_nand.c b/drivers/mtd/nand/raw/fsmc_nand.c index 70ac8d875218..41ba76efd6c8 100644 --- a/drivers/mtd/nand/raw/fsmc_nand.c +++ b/drivers/mtd/nand/raw/fsmc_nand.c @@ -727,7 +727,7 @@ static int fsmc_read_page_hwecc(struct nand_chip *chip, uint8_t *buf, uint8_t *p = buf; uint8_t *ecc_calc = chip->ecc.calc_buf; uint8_t *ecc_code = chip->ecc.code_buf; - int off, len, group = 0; + int off, len, ret, group = 0; /* * ecc_oob is intentionally taken as uint16_t. In 16bit devices, we * end up reading 14 bytes (7 words) from oob. The local array is @@ -740,11 +740,12 @@ static int fsmc_read_page_hwecc(struct nand_chip *chip, uint8_t *buf, for (i = 0, s = 0; s < eccsteps; s++, i += eccbytes, p += eccsize) { nand_read_page_op(chip, page, s * eccsize, NULL, 0); chip->ecc.hwctl(chip, NAND_ECC_READ); - nand_read_data_op(chip, p, eccsize, false); + ret = nand_read_data_op(chip, p, eccsize, false); + if (ret) + return ret; for (j = 0; j < eccbytes;) { struct mtd_oob_region oobregion; - int ret; ret = mtd_ooblayout_ecc(mtd, group++, &oobregion); if (ret) |