diff options
Diffstat (limited to 'drivers/pinctrl/pinmux.c')
| -rw-r--r-- | drivers/pinctrl/pinmux.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c index 8849830e5190..c494c37bf167 100644 --- a/drivers/pinctrl/pinmux.c +++ b/drivers/pinctrl/pinmux.c @@ -323,6 +323,11 @@ int pinmux_map_to_setting(struct pinctrl_map const *map, const unsigned *pins; unsigned num_pins; + if (!pmxops) { + dev_err(pctldev->dev, "does not support mux function\n"); + return -EINVAL; + } + setting->data.mux.func = pinmux_func_name_to_selector(pctldev, map->data.mux.function); if (setting->data.mux.func < 0) @@ -481,11 +486,14 @@ static int pinmux_functions_show(struct seq_file *s, void *what) { struct pinctrl_dev *pctldev = s->private; const struct pinmux_ops *pmxops = pctldev->desc->pmxops; - unsigned nfuncs = pmxops->get_functions_count(pctldev); + unsigned nfuncs; unsigned func_selector = 0; - mutex_lock(&pinctrl_mutex); + if (!pmxops) + return 0; + mutex_lock(&pinctrl_mutex); + nfuncs = pmxops->get_functions_count(pctldev); while (func_selector < nfuncs) { const char *func = pmxops->get_function_name(pctldev, func_selector); @@ -520,6 +528,9 @@ static int pinmux_pins_show(struct seq_file *s, void *what) const struct pinmux_ops *pmxops = pctldev->desc->pmxops; unsigned i, pin; + if (!pmxops) + return 0; + seq_puts(s, "Pinmux settings per pin\n"); seq_puts(s, "Format: pin (name): mux_owner gpio_owner hog?\n"); |