gpiolib: probe deferral error reporting

Actually report the error code from devm_regulator_get() which may as
well just be a probe deferral.

This is e.g. what one gets upon booting a Colibri T20:

gpiochip_add_data_with_key: GPIOs 0..223 (tegra-gpio) failed to register

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 464d5ba..bdbfc95 100644 (file)
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1414,9 +1414,9 @@ err_free_descs:
 err_free_gdev:
        ida_simple_remove(&gpio_ida, gdev->id);
        /* failures here can mean systems won't boot... */
-       pr_err("%s: GPIOs %d..%d (%s) failed to register\n", __func__,
+       pr_err("%s: GPIOs %d..%d (%s) failed to register, %d\n", __func__,
               gdev->base, gdev->base + gdev->ngpio - 1,
-              chip->label ? : "generic");
+              chip->label ? : "generic", status);
        kfree(gdev);
        return status;
 }