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> --- drivers/pinctrl/pinconf.c | 4 ---- 1 files changed, 0 insertions(+), 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; } -- 1.7.0.4 _______________________________________________ devicetree-discuss mailing list devicetree-discuss@lists.ozlabs.org https://lists.ozlabs.org/listinfo/devicetree-discuss