diff options
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 248279e44c9..97bdeb1c218 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -335,14 +335,9 @@ next_buffer: dbg("acm_rx_tasklet: procesing buf 0x%p, size = %d\n", buf, buf->size); - for (i = 0; i < buf->size && !acm->throttle; i++) { - /* if we insert more than TTY_FLIPBUF_SIZE characters, - we drop them. */ - if (tty->flip.count >= TTY_FLIPBUF_SIZE) { - tty_flip_buffer_push(tty); - } - tty_insert_flip_char(tty, buf->base[i], 0); - } + tty_buffer_request_room(tty, buf->size); + if (!acm->throttle) + tty_insert_flip_string(tty, buf->base, buf->size); tty_flip_buffer_push(tty); spin_lock(&acm->throttle_lock); @@ -1019,8 +1014,13 @@ static void acm_disconnect(struct usb_interface *intf) } down(&open_sem); + if (!usb_get_intfdata(intf)) { + up(&open_sem); + return; + } acm->dev = NULL; - usb_set_intfdata (intf, NULL); + usb_set_intfdata(acm->control, NULL); + usb_set_intfdata(acm->data, NULL); tasklet_disable(&acm->urb_task); @@ -1041,7 +1041,7 @@ static void acm_disconnect(struct usb_interface *intf) for (i = 0; i < ACM_NRB; i++) usb_buffer_free(usb_dev, acm->readsize, acm->rb[i].base, acm->rb[i].dma); - usb_driver_release_interface(&acm_driver, acm->data); + usb_driver_release_interface(&acm_driver, intf == acm->control ? acm->data : intf); if (!acm->used) { acm_tty_unregister(acm); |