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mtd: rawnand: fsmc: Fix unchecked return value in fsmc_read_page_hwecc

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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>
This commit is contained in:
Gustavo A. R. Silva 2018-10-10 17:58:58 +02:00 committed by Miquel Raynal
parent 9a4d830747
commit 41d6f0d07d
1 changed files with 4 additions and 3 deletions
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7
drivers/mtd/nand/raw/fsmc_nand.c
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@ -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)