From: Fabio Estevam Date: Tue, 17 Nov 2015 19:13:33 +0000 (-0200) Subject: spi: sf_ops: Check the return value from spi_flash_cmd_read_status() X-Git-Tag: v2016.01-rc2~242^2~1 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=a668a164ffb73db6f566f50e9440c872d5293742;hp=5168721e584e1fc104ccc3b1a027e8973a18f65b;p=oweals%2Fu-boot.git spi: sf_ops: Check the return value from spi_flash_cmd_read_status() We should check the return value from spi_flash_cmd_read_status() and propagate it in the case of error. This fixes a defect caught by Coverity. Reported-by: Tom Rini Signed-off-by: Fabio Estevam Reviewed-by: Jagan Teki --- diff --git a/drivers/mtd/spi/sf_ops.c b/drivers/mtd/spi/sf_ops.c index 4065520726..3a56d7f55c 100644 --- a/drivers/mtd/spi/sf_ops.c +++ b/drivers/mtd/spi/sf_ops.c @@ -663,8 +663,11 @@ int stm_lock(struct spi_flash *flash, u32 ofs, size_t len) u8 status_old, status_new; u8 mask = SR_BP2 | SR_BP1 | SR_BP0; u8 shift = ffs(mask) - 1, pow, val; + int ret; - spi_flash_cmd_read_status(flash, &status_old); + ret = spi_flash_cmd_read_status(flash, &status_old); + if (ret < 0) + return ret; /* SPI NOR always locks to the end */ if (ofs + len != flash->size) { @@ -714,8 +717,11 @@ int stm_unlock(struct spi_flash *flash, u32 ofs, size_t len) uint8_t status_old, status_new; u8 mask = SR_BP2 | SR_BP1 | SR_BP0; u8 shift = ffs(mask) - 1, pow, val; + int ret; - spi_flash_cmd_read_status(flash, &status_old); + ret = spi_flash_cmd_read_status(flash, &status_old); + if (ret < 0) + return ret; /* Cannot unlock; would unlock larger region than requested */ if (stm_is_locked_sr(flash, status_old, ofs - flash->erase_size,