greybus: es1-ap-usb: handle -EPROTO in check_urb_status()

On a disconnect we can also have a status of -EPROTO. This results in
a flood of error messages due to the -EAGAIN handling of unsupported
status results. Fix this by also returning status when we have -EPROTO.

Signed-off-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

diff --git a/drivers/staging/greybus/es1-ap-usb.c b/drivers/staging/greybus/es1-ap-usb.c
index 97dd9b6a2bc1bb01eef6d63c252498adcf855da0..1a67d9e15c2aa44a7df2c5e4776feb176160a9d9 100644 (file)
--- a/drivers/staging/greybus/es1-ap-usb.c
+++ b/drivers/staging/greybus/es1-ap-usb.c
@@ -257,6 +257,7 @@ static int check_urb_status(struct urb *urb)
        case -ENOENT:
        case -ESHUTDOWN:
        case -EILSEQ:
+       case -EPROTO:
                /* device is gone, stop sending */
                return status;
        }