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cdc-acm: fix BREAK rx code path adding necessary calls
author
Oliver Neukum
<oneukum@suse.com>
Thu, 11 Mar 2021 13:37:14 +0000
(14:37 +0100)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Tue, 23 Mar 2021 12:25:41 +0000
(13:25 +0100)
Counting break events is nice but we should actually report them to
the tty layer.
Fixes:
5a6a62bdb9257
("cdc-acm: add TIOCMIWAIT")
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link:
https://lore.kernel.org/r/20210311133714.31881-1-oneukum@suse.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/class/cdc-acm.c
patch
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diff --git
a/drivers/usb/class/cdc-acm.c
b/drivers/usb/class/cdc-acm.c
index
39ddb55
..
b013671
100644
(file)
--- a/
drivers/usb/class/cdc-acm.c
+++ b/
drivers/usb/class/cdc-acm.c
@@
-313,8
+313,10
@@
static void acm_process_notification(struct acm *acm, unsigned char *buf)
acm->iocount.dsr++;
if (difference & ACM_CTRL_DCD)
acm->iocount.dcd++;
- if (newctrl & ACM_CTRL_BRK)
+ if (newctrl & ACM_CTRL_BRK)
{
acm->iocount.brk++;
+ tty_insert_flip_char(&acm->port, 0, TTY_BREAK);
+ }
if (newctrl & ACM_CTRL_RI)
acm->iocount.rng++;
if (newctrl & ACM_CTRL_FRAMING)