i2c: i2c-mux-gpio: don't ignore of_get_named_gpio errors

of_get_named_gpio could return -E_PROBE_DEFER or another
error code. This error should be passed further instead
of being ignored.

Signed-off-by: Ionut Nicu <ioan.nicu.ext@nsn.com>
Acked-by: Peter Korsgaard <peter.korsgaard@barco.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c
index 5d4a99b..7f343bc 100644 (file)
--- a/drivers/i2c/muxes/i2c-mux-gpio.c
+++ b/drivers/i2c/muxes/i2c-mux-gpio.c
@@ -66,7 +66,7 @@ static int i2c_mux_gpio_probe_dt(struct gpiomux *mux,
        struct device_node *adapter_np, *child;
        struct i2c_adapter *adapter;
        unsigned *values, *gpios;
-       int i = 0;
+       int i = 0, ret;
 
        if (!np)
                return -ENODEV;
@@ -116,8 +116,12 @@ static int i2c_mux_gpio_probe_dt(struct gpiomux *mux,
                return -ENOMEM;
        }
 
-       for (i = 0; i < mux->data.n_gpios; i++)
-               gpios[i] = of_get_named_gpio(np, "mux-gpios", i);
+       for (i = 0; i < mux->data.n_gpios; i++) {
+               ret = of_get_named_gpio(np, "mux-gpios", i);
+               if (ret < 0)
+                       return ret;
+               gpios[i] = ret;
+       }
 
        mux->data.gpios = gpios;