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authorMax Krummenacher <max.krummenacher@toradex.com>2021-11-04 16:45:40 +0100
committerMax Krummenacher <max.krummenacher@toradex.com>2021-11-04 16:45:40 +0100
commit4a0abd7dd466276ee3fdf79b54f05f845f7d8844 (patch)
treefc43c16f111b65876c05e227fbd76e76604acf33 /drivers/usb/class/cdc-acm.c
parentf8e718054f4421d11638e370b933ccc6c77466ed (diff)
parente0018f4c9325b36ae75a591d54879bf9a9f41a26 (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/cdc-acm.c')
-rw-r--r--drivers/usb/class/cdc-acm.c8
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);
}