This is a note to let you know that I've just added the patch titled
sparc: serial: sunhv: fix a double lock bug
to the 4.4-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:
sparc-serial-sunhv-fix-a-double-lock-bug.patch
and it can be found in the queue-4.4 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 Sat Nov 19 09:52:37 CET 2016
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Fri, 15 Jul 2016 14:17:33 +0300
Subject: sparc: serial: sunhv: fix a double lock bug
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
[ Upstream commit 344e3c7734d5090b148c19ac6539b8947fed6767 ]
We accidentally take the "port->lock" twice in a row. This old code
was supposed to be deleted.
Fixes: e58e241c1788 ('sparc: serial: Clean up the locking for -rt')
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/tty/serial/sunhv.c | 6 ------
1 file changed, 6 deletions(-)
--- a/drivers/tty/serial/sunhv.c
+++ b/drivers/tty/serial/sunhv.c
@@ -490,12 +490,6 @@ static void sunhv_console_write_bychar(s
locked = spin_trylock_irqsave(&port->lock, flags);
else
spin_lock_irqsave(&port->lock, flags);
- if (port->sysrq) {
- locked = 0;
- } else if (oops_in_progress) {
- locked = spin_trylock(&port->lock);
- } else
- spin_lock(&port->lock);
for (i = 0; i < n; i++) {
if (*s == '\n')
Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are
queue-4.4/sparc-serial-sunhv-fix-a-double-lock-bug.patch
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