This is a note to let you know that I've just added the patch titled
sunsab: Fix detection of BREAK on sunsab serial console
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
sunsab-fix-detection-of-break-on-sunsab-serial-console.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Fri Aug 8 08:54:13 PDT 2014
From: Christopher Alexander Tobias Schulze <cat.schulze@xxxxxxxxxxxxx>
Date: Sun, 3 Aug 2014 16:01:53 +0200
Subject: sunsab: Fix detection of BREAK on sunsab serial console
From: Christopher Alexander Tobias Schulze <cat.schulze@xxxxxxxxxxxxx>
[ Upstream commit fe418231b195c205701c0cc550a03f6c9758fd9e ]
Fix detection of BREAK on sunsab serial console: BREAK detection was only
performed when there were also serial characters received simultaneously.
To handle all BREAKs correctly, the check for BREAK and the corresponding
call to uart_handle_break() must also be done if count == 0, therefore
duplicate this code fragment and pull it out of the loop over the received
characters.
Patch applies to 3.16-rc6.
Signed-off-by: Christopher Alexander Tobias Schulze <cat.schulze@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/tty/serial/sunsab.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/drivers/tty/serial/sunsab.c
+++ b/drivers/tty/serial/sunsab.c
@@ -157,6 +157,15 @@ receive_chars(struct uart_sunsab_port *u
(up->port.line == up->port.cons->index))
saw_console_brk = 1;
+ if (count == 0) {
+ if (unlikely(stat->sreg.isr1 & SAB82532_ISR1_BRK)) {
+ stat->sreg.isr0 &= ~(SAB82532_ISR0_PERR |
+ SAB82532_ISR0_FERR);
+ up->port.icount.brk++;
+ uart_handle_break(&up->port);
+ }
+ }
+
for (i = 0; i < count; i++) {
unsigned char ch = buf[i], flag;
Patches currently in stable-queue which might be from cat.schulze@xxxxxxxxxxxxx are
queue-3.14/bbc-i2c-fix-bbc-i2c-envctrl-on-sunblade-2000.patch
queue-3.14/sunsab-fix-detection-of-break-on-sunsab-serial-console.patch
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