diff options
| author | Mark Brown <broonie@kernel.org> | 2021-10-29 22:00:00 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-10-29 22:00:00 +0100 |
| commit | 318a54c0ee4aaa3bfd69fdf505588510c7672c0c (patch) | |
| tree | fcd342658639851179ab88c0eb317e83b586eb71 /drivers/usb/class/cdc-acm.c | |
| parent | 8e14329645bc7d722e1ec913025b54199fafaee3 (diff) | |
| parent | 6195eb15f6d60dd92d1644dc11f1c1c2e84ebfeb (diff) | |
Merge remote-tracking branch 'asoc/for-5.16' into asoc-next
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 4e2f1552f4b7..7b2e2420ecae 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -340,6 +340,9 @@ static void acm_process_notification(struct acm *acm, unsigned char *buf) acm->iocount.overrun++; spin_unlock_irqrestore(&acm->read_lock, flags); + if (newctrl & ACM_CTRL_BRK) + tty_flip_buffer_push(&acm->port); + if (difference) wake_up_all(&acm->wioctl); @@ -475,11 +478,16 @@ static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags) static void acm_process_read_urb(struct acm *acm, struct urb *urb) { + unsigned long flags; + if (!urb->actual_length) return; + spin_lock_irqsave(&acm->read_lock, flags); tty_insert_flip_string(&acm->port, urb->transfer_buffer, urb->actual_length); + spin_unlock_irqrestore(&acm->read_lock, flags); + tty_flip_buffer_push(&acm->port); } |