diff options
Diffstat (limited to 'drivers/usb/serial/generic.c')
| -rw-r--r-- | drivers/usb/serial/generic.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 9eb4a65ee4d9..97fa3c428435 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -175,6 +175,14 @@ int usb_serial_generic_resume(struct usb_serial *serial) struct usb_serial_port *port; int i, c = 0, r; +#ifdef CONFIG_PM + /* + * If this is an autoresume, don't submit URBs. + * They will be submitted in the open function instead. + */ + if (serial->dev->auto_pm) + return 0; +#endif for (i = 0; i < serial->num_ports; i++) { port = serial->port[i]; if (port->open_count && port->read_urb) { @@ -327,6 +335,7 @@ void usb_serial_generic_read_bulk_callback (struct urb *urb) struct usb_serial_port *port = (struct usb_serial_port *)urb->context; unsigned char *data = urb->transfer_buffer; int status = urb->status; + unsigned long flags; dbg("%s - port %d", __FUNCTION__, port->number); @@ -339,11 +348,11 @@ void usb_serial_generic_read_bulk_callback (struct urb *urb) usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data); /* Throttle the device if requested by tty */ - spin_lock(&port->lock); + spin_lock_irqsave(&port->lock, flags); if (!(port->throttled = port->throttle_req)) /* Handle data and continue reading from device */ flush_and_resubmit_read_urb(port); - spin_unlock(&port->lock); + spin_unlock_irqrestore(&port->lock, flags); } EXPORT_SYMBOL_GPL(usb_serial_generic_read_bulk_callback); |