This is a note to let you know that I've just added the patch titled
pinctrl: remove mutex lock in groups show
to the 3.6-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:
pinctrl-remove-mutex-lock-in-groups-show.patch
and it can be found in the queue-3.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 7ae9d71e8df27a3ab60a05ae3add08728debc09c Mon Sep 17 00:00:00 2001
From: Haojian Zhuang <[email protected]>
Date: Thu, 18 Oct 2012 17:07:01 +0800
Subject: pinctrl: remove mutex lock in groups show
From: Haojian Zhuang <[email protected]>
commit 7ae9d71e8df27a3ab60a05ae3add08728debc09c upstream.
Mutex is locked duplicatly by pinconf_groups_show() and
pin_config_group_get(). It results dead lock. So avoid to lock mutex
in pinconf_groups_show().
Signed-off-by: Haojian Zhuang <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/pinctrl/pinconf.c | 4 ----
1 file changed, 4 deletions(-)
--- a/drivers/pinctrl/pinconf.c
+++ b/drivers/pinctrl/pinconf.c
@@ -537,8 +537,6 @@ static int pinconf_groups_show(struct se
seq_puts(s, "Pin config settings per pin group\n");
seq_puts(s, "Format: group (name): configs\n");
- mutex_lock(&pinctrl_mutex);
-
while (selector < ngroups) {
const char *gname = pctlops->get_group_name(pctldev, selector);
@@ -549,8 +547,6 @@ static int pinconf_groups_show(struct se
selector++;
}
- mutex_unlock(&pinctrl_mutex);
-
return 0;
}
Patches currently in stable-queue which might be from [email protected]
are
queue-3.6/pinctrl-remove-mutex-lock-in-groups-show.patch
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