4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dan Carpenter <dan.carpenter@xxxxxxxxxx> [ Upstream commit 5fc853cc01c68f84984ecc2d5fd777ecad78240f ] We accidentally left out the error handling for kstrtoul(). Fixes: a520030e326a ("qlcnic: Implement flash sysfs callback for 83xx adapter") Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c @@ -1128,6 +1128,8 @@ static ssize_t qlcnic_83xx_sysfs_flash_w struct qlcnic_adapter *adapter = dev_get_drvdata(dev); ret = kstrtoul(buf, 16, &data); + if (ret) + return ret; switch (data) { case QLC_83XX_FLASH_SECTOR_ERASE_CMD: