From: Laxman Dewangan <ldewangan@nvidia.com>
Date: Wed, 6 May 2015 12:50:09 +0000 (+0530)
Subject: regulator: max8973: make default/unset dvs gpio as invalid gpio
X-Git-Tag: v4.2-rc1~141^2~1^6~6
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=eaacaa09e42ab9ae0ebc25fc2b72aef02e3f284a;p=karo-tx-linux.git

regulator: max8973: make default/unset dvs gpio as invalid gpio

If platform data has dvs-gpio value 0 as default/unset then
make this as invalid gpio so that function gpio_is_valid()
can return false on this case.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/drivers/regulator/max8973-regulator.c b/drivers/regulator/max8973-regulator.c
index be9a463d7354..3df5a84f819c 100644
--- a/drivers/regulator/max8973-regulator.c
+++ b/drivers/regulator/max8973-regulator.c
@@ -413,7 +413,7 @@ static int max8973_probe(struct i2c_client *client,
 	}
 
 	if (pdata) {
-		max->dvs_gpio = pdata->dvs_gpio;
+		max->dvs_gpio = (pdata->dvs_gpio) ? pdata->dvs_gpio : -EINVAL;
 		max->enable_external_control = pdata->enable_ext_control;
 		max->curr_gpio_val = pdata->dvs_def_state;
 		max->curr_vout_reg = MAX8973_VOUT + pdata->dvs_def_state;