From 7ae9d71e8df27a3ab60a05ae3add08728debc09c Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Thu, 18 Oct 2012 17:07:01 +0800 Subject: [PATCH] pinctrl: remove mutex lock in groups show 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(). Cc: stable@kernel.org Signed-off-by: Haojian Zhuang Signed-off-by: Linus Walleij --- drivers/pinctrl/pinconf.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c index 43f474cdc110..baee2cc46a17 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; }