diff options
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index f2a120eea9d4..36a2a0b7b82c 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -567,6 +567,14 @@ static int acm_port_activate(struct tty_port *port, struct tty_struct *tty) usb_autopm_put_interface(acm->control); + /* + * Unthrottle device in case the TTY was closed while throttled. + */ + spin_lock_irq(&acm->read_lock); + acm->throttled = 0; + acm->throttle_req = 0; + spin_unlock_irq(&acm->read_lock); + if (acm_submit_read_urbs(acm, GFP_KERNEL)) goto error_submit_read_urbs; |