regulator: giving regulator controlling gpios a non-empty label when used through...

When the label is empty, it causes missing information and limits diagnostics
for instances such as 'cat /sys/kernel/debug/gpio'

Setting the label to the regulator supply_name will point to the device
using the gpio(s).

Signed-off-by: Nicholas Lowell <nlowell@lexmark.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/regulator/gpio-regulator.c b/drivers/regulator/gpio-regulator.c
index a2eb50719c7bb2b6cdd3b23fd2786d9fdb24f09f..a86b8997bb54cc3be5bc01354b4949e1cd9e38a7 100644 (file)
--- a/drivers/regulator/gpio-regulator.c
+++ b/drivers/regulator/gpio-regulator.c
@@ -196,6 +196,7 @@ of_get_gpio_regulator_config(struct device *dev, struct device_node *np,
                                break;
                        }
                        config->gpios[i].gpio = gpio;
+                       config->gpios[i].label = config->supply_name;
                        if (proplen > 0) {
                                of_property_read_u32_index(np, "gpios-states",
                                                           i, &ret);