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cdc-acm: fix BREAK rx code path adding necessary calls

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Counting break events is nice but we should actually report them to
the tty layer.

Fixes: 5a6a62bdb9 ("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>
This commit is contained in:
Oliver Neukum 2021-03-11 14:37:14 +01:00 committed by Greg Kroah-Hartman
parent 72035f4954
commit 08dff274ed
1 changed files with 3 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/usb/class/cdc-acm.c
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@ -313,8 +313,10 @@ static void acm_process_notification(struct acm *acm, unsigned char *buf)
acm->iocount.dsr++; acm->iocount.dsr++;
if (difference & ACM_CTRL_DCD) if (difference & ACM_CTRL_DCD)
acm->iocount.dcd++; acm->iocount.dcd++;
if (newctrl & ACM_CTRL_BRK) if (newctrl & ACM_CTRL_BRK) {
acm->iocount.brk++; acm->iocount.brk++;
tty_insert_flip_char(&acm->port, 0, TTY_BREAK);
}
if (newctrl & ACM_CTRL_RI) if (newctrl & ACM_CTRL_RI)
acm->iocount.rng++; acm->iocount.rng++;
if (newctrl & ACM_CTRL_FRAMING) if (newctrl & ACM_CTRL_FRAMING)