From: Oliver Neukum <oneukum@suse.com>
To: bruno.thomsen@gmail.com, gregKH@linuxfoundation.org,
linux-usb@vger.kernel.org
Cc: Oliver Neukum <oneukum@suse.com>
Subject: [PATCH] cdc-acm: fix BREAK rx code path adding necessary calls
Date: Thu, 11 Mar 2021 14:37:14 +0100 [thread overview]
Message-ID: <20210311133714.31881-1-oneukum@suse.com> (raw)
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>
---
drivers/usb/class/cdc-acm.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index b05207bc8265..fd2fce072985 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -326,8 +326,10 @@ 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)
--
2.26.2
reply other threads:[~2021-03-11 13:38 UTC|newest]
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