diff options
| author | Max Krummenacher <max.krummenacher@toradex.com> | 2021-11-04 16:45:40 +0100 |
|---|---|---|
| committer | Max Krummenacher <max.krummenacher@toradex.com> | 2021-11-04 16:45:40 +0100 |
| commit | 4a0abd7dd466276ee3fdf79b54f05f845f7d8844 (patch) | |
| tree | fc43c16f111b65876c05e227fbd76e76604acf33 /drivers/usb/class | |
| parent | f8e718054f4421d11638e370b933ccc6c77466ed (diff) | |
| parent | e0018f4c9325b36ae75a591d54879bf9a9f41a26 (diff) | |
Merge tag 'v4.4.291' into toradex_vf_4.4-nexttoradex_vf_4.4-nexttoradex_vf_4.4
This is the 4.4.291 stable release
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Diffstat (limited to 'drivers/usb/class')
| -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 44184cc6585e..d869f37b1d23 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -348,6 +348,9 @@ static void acm_ctrl_irq(struct urb *urb) acm->iocount.overrun++; spin_unlock(&acm->read_lock); + if (newctrl & ACM_CTRL_BRK) + tty_flip_buffer_push(&acm->port); + if (difference) wake_up_all(&acm->wioctl); @@ -407,11 +410,16 @@ 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); } |