[RESEND PATCH 1/2] regulator: max8973: make default/unset dvs gpio as invalid gpio

[Laxman Dewangan]

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@xxxxxxxxxx>
---
This patch is applied earlier but not able to apply on latest
so sending it again.

 drivers/regulator/max8973-regulator.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/regulator/max8973-regulator.c b/drivers/regulator/max8973-regulator.c
index be9a463..3df5a84 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;
-- 
2.1.4

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