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().
Change-Id: I2aa3fa241a20f60eb78f1cd517f9f661e9b826a1
Cc: stable@kernel.org
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Git-commit: 7ae9d71e8df27a3ab60a05ae3add08728debc09c
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: Hanumant Singh <hanumant@codeaurora.org>
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 @@
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 @@
selector++;
}
- mutex_unlock(&pinctrl_mutex);
-
return 0;
}