pinctrl: at91: Add error handling for pinctrl_utils_add_map_mux()

In atmel_pctl_dt_subnode_to_map(), the return value of
pinctrl_utils_add_map_mux() needs to be checked, for the function
will fail to associate group when the group map is full. Add error
handling for pinctrl_utils_add_map_mux() to return immediately and
propagate the error code to caller function when the function fails.

Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Link: https://lore.kernel.org/20250318030717.781-1-vulab@iscas.ac.cn
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinctrl-at91-pio4.c b/drivers/pinctrl/pinctrl-at91-pio4.c
index 8b01d312305ad40c38c45ee48b34fed44ff87a4b..4dcaebc20d99e31145d5f6754db88f6d6c5bb9b8 100644 (file)
--- a/drivers/pinctrl/pinctrl-at91-pio4.c
+++ b/drivers/pinctrl/pinctrl-at91-pio4.c
@@ -609,8 +609,10 @@ static int atmel_pctl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
                if (ret)
                        goto exit;
 
-               pinctrl_utils_add_map_mux(pctldev, map, reserved_maps, num_maps,
+               ret = pinctrl_utils_add_map_mux(pctldev, map, reserved_maps, num_maps,
                                          group, func);
+               if (ret)
+                       goto exit;
 
                if (num_configs) {
                        ret = pinctrl_utils_add_map_configs(pctldev, map,