diff options
Diffstat (limited to 'drivers/usb/serial/usb-serial.h')
| -rw-r--r-- | drivers/usb/serial/usb-serial.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/serial/usb-serial.h b/drivers/usb/serial/usb-serial.h index d1f0c4057fa6..57f92f054c75 100644 --- a/drivers/usb/serial/usb-serial.h +++ b/drivers/usb/serial/usb-serial.h @@ -69,6 +69,7 @@ * usb_serial_port: structure for the specific ports of a device. * @serial: pointer back to the struct usb_serial owner of this port. * @tty: pointer to the corresponding tty for this port. + * @lock: spinlock to grab when updating portions of this structure. * @number: the number of the port (the minor number). * @interrupt_in_buffer: pointer to the interrupt in buffer for this port. * @interrupt_in_urb: pointer to the interrupt in struct urb for this port. @@ -98,6 +99,7 @@ struct usb_serial_port { struct usb_serial * serial; struct tty_struct * tty; + spinlock_t lock; unsigned char number; unsigned char * interrupt_in_buffer; @@ -117,6 +119,7 @@ struct usb_serial_port { unsigned char * bulk_out_buffer; int bulk_out_size; struct urb * write_urb; + int write_urb_busy; __u8 bulk_out_endpointAddress; wait_queue_head_t write_wait; |