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Code Issues Releases Wiki Activity

USB: usb_wwan: fix discarded writes on resume errors

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There's no reason not to try sending off any further delayed write urbs,
should one urb-submission fail.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2014-05-26 19:23:19 +02:00 committed by Greg Kroah-Hartman
parent fb7ad4f93d
commit 7436f41283
1 changed files with 16 additions and 11 deletions
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27
drivers/usb/serial/usb_wwan.c
View file

@ -621,28 +621,33 @@ EXPORT_SYMBOL(usb_wwan_suspend);
static int play_delayed(struct usb_serial_port *port)
{
struct usb_serial *serial = port->serial;
struct usb_wwan_intf_private *data;
struct usb_wwan_port_private *portdata;
struct urb *urb;
int err = 0;
int err_count = 0;
int err;
portdata = usb_get_serial_port_data(port);
data = port->serial->private;
while ((urb = usb_get_from_anchor(&portdata->delayed))) {
err = usb_submit_urb(urb, GFP_ATOMIC);
if (!err) {
data->in_flight++;
} else {
/* we have to throw away the rest */
do {
unbusy_queued_urb(urb, portdata);
usb_autopm_put_interface_no_suspend(port->serial->interface);
} while ((urb = usb_get_from_anchor(&portdata->delayed)));
break;
if (err) {
dev_err(&port->dev,
"%s: submit write urb failed: %d\n",
__func__, err);
err_count++;
unbusy_queued_urb(urb, portdata);
usb_autopm_put_interface_async(serial->interface);
continue;
}
data->in_flight++;
}
return err;
if (err_count)
return -EIO;
return 0;
}
int usb_wwan_resume(struct usb_serial *serial)