check the value of 'ret' after call 'lan78xx_read_reg'.
Signed-off-by: Su Hui <suhui@xxxxxxxxxxxx>
---
Clang complains that value stored to 'ret' is never read.
Maybe this place miss an error code check, I'm not sure
about this.
drivers/net/usb/lan78xx.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index 59cde06aa7f6..347788336b11 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -977,6 +977,10 @@ static int lan78xx_write_raw_eeprom(struct lan78xx_net *dev, u32 offset,
* disable & restore LED function to access EEPROM.
*/
ret = lan78xx_read_reg(dev, HW_CFG, &val);
+ if (ret < 0) {
+ retval = -EIO;
+ goto exit;
+ }
saved = val;
if (dev->chipid == ID_REV_CHIP_ID_7800_) {
val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_);
--
2.30.2
