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usbip: Fix vhci_urb_enqueue() URB null transfer buffer error path

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Fix vhci_urb_enqueue() to print debug msg and return error instead of
failing with BUG_ON.

Signed-off-by: Shuah Khan <shuah@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Shuah Khan 2019-01-24 14:46:42 -07:00 committed by Greg Kroah-Hartman
parent 5b25536954
commit 2c904963b1
1 changed files with 4 additions and 2 deletions
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6
drivers/usb/usbip/vhci_hcd.c
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@ -702,8 +702,10 @@ static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flag
}
vdev = &vhci_hcd->vdev[portnum-1];
/* patch to usb_sg_init() is in 2.5.60 */
BUG_ON(!urb->transfer_buffer && urb->transfer_buffer_length);
if (!urb->transfer_buffer && urb->transfer_buffer_length) {
dev_dbg(dev, "Null URB transfer buffer\n");
return -EINVAL;
}
spin_lock_irqsave(&vhci->lock, flags);