3.5.7u1 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Haojian Zhuang <haojian.zhu...@gmail.com>
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 <haojian.zhu...@gmail.com>
Signed-off-by: Linus Walleij <linus.wall...@linaro.org>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesin...@canonical.com>
---
drivers/pinctrl/pinconf.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c
index 43f474c..baee2cc 100644
--- a/drivers/pinctrl/pinconf.c
+++ b/drivers/pinctrl/pinconf.c
@@ -537,8 +537,6 @@ static int pinconf_groups_show(struct seq_file *s, void
*what)
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 seq_file *s, void
*what)
selector++;
}
- mutex_unlock(&pinctrl_mutex);
-
return 0;
}
--
1.7.9.5
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
