From: Gustavo A. R. Silva garsilva@embeddedor.com
commit 61c59355e0154a938b28710dfa6c1d8be2ddcefa upstream.
_dev_ is being dereferenced before it is null checked, hence there is a potential null pointer dereference.
Fix this by moving the pointer dereference after _dev_ has been null checked.
Addresses-Coverity-ID: 1462020 Fixes: bb1b40c7cb86 ("usbnet: ipheth: prevent TX queue timeouts when device not ready") Signed-off-by: Gustavo A. R. Silva garsilva@embeddedor.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/net/usb/ipheth.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/net/usb/ipheth.c +++ b/drivers/net/usb/ipheth.c @@ -290,12 +290,15 @@ static void ipheth_sndbulk_callback(stru
static int ipheth_carrier_set(struct ipheth_device *dev) { - struct usb_device *udev = dev->udev; + struct usb_device *udev; int retval; + if (!dev) return 0; if (!dev->confirmed_pairing) return 0; + + udev = dev->udev; retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, IPHETH_CTRL_ENDP), IPHETH_CMD_CARRIER_CHECK, /* request */