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usbnet/smsc75xx: silence uninitialized variable warning 

If the fn() calls fail then "buf" is uninitialized.  Just return early
in that situation.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2016-05-04 09:21:02 +03:00 committed by David S. Miller
parent 614bdd4d6e
commit 58ef6a3f64
1 changed files with 3 additions and 1 deletions
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4
drivers/net/usb/smsc75xx.c
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@ -99,9 +99,11 @@ static int __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index,
ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
| USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, index, &buf, 4);
if (unlikely(ret < 0))
if (unlikely(ret < 0)) {
netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n",
index, ret);
return ret;
}
le32_to_cpus(&buf);
*data = buf;