[PATCH 4.14 07/25] usbnet: fix error return code in usbnet_probe()

From: Greg Kroah-Hartman
Date: Mon Nov 01 2021 - 05:23:45 EST


From: Wang Hai <wanghai38@xxxxxxxxxx>

commit 6f7c88691191e6c52ef2543d6f1da8d360b27a24 upstream.

Return error code if usb_maxpacket() returns 0 in usbnet_probe()

Fixes: 397430b50a36 ("usbnet: sanity check for maxpacket")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Wang Hai <wanghai38@xxxxxxxxxx>
Reviewed-by: Johan Hovold <johan@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20211026124015.3025136-1-wanghai38@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/usb/usbnet.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -1790,6 +1790,7 @@ usbnet_probe (struct usb_interface *udev
dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
if (dev->maxpacket == 0) {
/* that is a broken device */
+ status = -ENODEV;
goto out4;
}