diff options
| author | Tim Douglas <me@timdoug.com> | 2026-10-12 21:35:41 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-10-14 15:13:35 +0200 |
| commit | 8db79ea07a67b126c773da6efdc00066000daeb8 (patch) | |
| tree | f1ab63d1e5c1fd41568f24c5338b8c217f68e662 /drivers/tty | |
| parent | f3dc727da3af64abc12b625bbf1eb68d55d882cc (diff) | |
serial: pmac_zilog: report received breaks
pmz_status_handle() sets PMACZILOG_FLAG_BREAK from RR0, and
pmz_receive_chars() clears it on the null character that ends the
break without marking that character, then tests BRK_ABRT in RR1,
where the SCC does not set it in asynchronous mode. Breaks therefore
arrive as plain NULs: brk is never counted and BRKINT, PARMRK and SysRq
never see them.
Set BRK_ABRT in r1 for that character, as sunzilog does.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Assisted-by: LLM
Signed-off-by: Tim Douglas <me@timdoug.com>
Link: https://patch.msgid.link/20261013013541.4535-3-me@timdoug.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/pmac_zilog.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c index f49d6052d11b..a612f1db9f18 100644 --- a/drivers/tty/serial/pmac_zilog.c +++ b/drivers/tty/serial/pmac_zilog.c @@ -233,6 +233,7 @@ static bool pmz_receive_chars(struct uart_pmac_port *uap) ch &= uap->parity_mask; if (ch == 0 && uap->flags & PMACZILOG_FLAG_BREAK) { uap->flags &= ~PMACZILOG_FLAG_BREAK; + r1 |= BRK_ABRT; } #if defined(CONFIG_MAGIC_SYSRQ) && defined(CONFIG_SERIAL_CORE_CONSOLE) |