From: Jeremiah Mahler Date: Sun, 11 Jan 2015 13:42:07 +0000 (-0800) Subject: usb: serial: handle -ENODEV quietly in generic_submit_read_urb X-Git-Tag: firefly_0821_release~176^2~2507^2~1^2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=04f9c6e6d17584340fb6c8a9469a0e6df28876d2;p=firefly-linux-kernel-4.4.55.git usb: serial: handle -ENODEV quietly in generic_submit_read_urb If a USB serial device (e.g. /dev/ttyUSB0) with an active program is unplugged, an -ENODEV (19) error will be produced after it gives up trying to resubmit a read. usb_serial_generic_submit_read_urb - usb_submit_urb failed: -19 Add -ENODEV as one of the permanent errors along with -EPERM that usb_serial_generic_submit_read_urb() handles quietly without an error. Signed-off-by: Jeremiah Mahler Signed-off-by: Johan Hovold --- diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 2d7207b9f6a4..ccf1df7c4b80 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -286,7 +286,7 @@ static int usb_serial_generic_submit_read_urb(struct usb_serial_port *port, res = usb_submit_urb(port->read_urbs[index], mem_flags); if (res) { - if (res != -EPERM) { + if (res != -EPERM && res != -ENODEV) { dev_err(&port->dev, "%s - usb_submit_urb failed: %d\n", __func__, res);