The spinan_read_status can fail, check for the return value and
fail if the spinand_read_status fails.
Cc: Kamlakant Patel <kamlakant.patel@xxxxxxxxxxxx>
Signed-off-by: Devendra Naga <devendra.aaru@xxxxxxxxx>
---
compile tested only with make allmodconfig (platform X86_64 )
drivers/staging/mt29f_spinand/mt29f_spinand.c | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/mt29f_spinand/mt29f_spinand.c b/drivers/staging/mt29f_spinand/mt29f_spinand.c
index 3628bcb..3b191fc 100644
--- a/drivers/staging/mt29f_spinand/mt29f_spinand.c
+++ b/drivers/staging/mt29f_spinand/mt29f_spinand.c
@@ -626,7 +626,8 @@ static int spinand_write_page_hwecc(struct mtd_info *mtd,
static int spinand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
uint8_t *buf, int oob_required, int page)
{
- u8 retval, status;
+ int retval;
+ u8 status;
uint8_t *p = buf;
int eccsize = chip->ecc.size;
int eccsteps = chip->ecc.steps;
@@ -640,6 +641,13 @@ static int spinand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
while (1) {
retval = spinand_read_status(info->spi, &status);
+ if (retval < 0) {
+ dev_err(&mtd->dev,
+ "error %d reading status register\n",
+ retval);
+ return retval;
+ }
+
if ((status & STATUS_OIP_MASK) == STATUS_READY) {
if ((status & STATUS_ECC_MASK) == STATUS_ECC_ERROR) {
pr_info("spinand: ECC error\n");
@@ -685,6 +693,13 @@ static int spinand_wait(struct mtd_info *mtd, struct nand_chip *chip)
while (time_before(jiffies, timeo)) {
retval = spinand_read_status(info->spi, &status);
+ if (retval < 0) {
+ dev_err(&mtd->dev,
+ "error %d reading status register\n",
+ retval);
+ return retval;
+ }
+
if ((status & STATUS_OIP_MASK) == STATUS_READY)
return 0;
--
1.9.3
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