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usbnet: fix error return code in usbnet_probe()

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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@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211026124015.3025136-1-wanghai38@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wang Hai 2021-10-26 20:40:15 +08:00 committed by Greg Kroah-Hartman
parent 492140e45d
commit b7dfc536db
1 changed files with 1 additions and 0 deletions
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drivers/net/usb/usbnet.c
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@ -1775,6 +1775,7 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1); dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
if (dev->maxpacket == 0) { if (dev->maxpacket == 0) {
/* that is a broken device */ /* that is a broken device */
status = -ENODEV;
goto out4; goto out4;
} }