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| author | Oliver Neukum <oneukum@suse.com> | 2021-03-11 14:37:14 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-07 12:48:51 +0200 |
| commit | 1e63430a1fe941e537e4dba96944326576dd4f4d (patch) | |
| tree | f66763b9e9460ec0cb5cd1da59510d2d135f9c47 | |
| parent | d8ae07e00afc91f8f94730e2916a9251e7c03c62 (diff) | |
| download | linux-stable-1e63430a1fe941e537e4dba96944326576dd4f4d.tar.gz linux-stable-1e63430a1fe941e537e4dba96944326576dd4f4d.tar.bz2 linux-stable-1e63430a1fe941e537e4dba96944326576dd4f4d.zip | |
cdc-acm: fix BREAK rx code path adding necessary calls
commit 08dff274edda54310d6f1cf27b62fddf0f8d146e upstream.
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>
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index c523dfe408d5..7a38d2899cc3 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -312,8 +312,10 @@ 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) |