linux-kernel - [PATCH] extcon: arizona: Only set GPIO if it has been requested

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Date:	Mon, 26 Nov 2012 11:28:35 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>
Cc:	patches@...nsource.wolfsonmicro.com, linux-kernel@...r.kernel.org,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH] extcon: arizona: Only set GPIO if it has been requested

The micd_pol GPIO is only requested if we've specified one greater than 0
so apply the same test before we set it.

Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
---
 drivers/extcon/extcon-arizona.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index cdab9e5..585882e 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -85,8 +85,9 @@ static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
 {
 	struct arizona *arizona = info->arizona;
 
-	gpio_set_value_cansleep(arizona->pdata.micd_pol_gpio,
-				info->micd_modes[mode].gpio);
+	if (arizona->pdata.micd_pol_gpio > 0)
+		gpio_set_value_cansleep(arizona->pdata.micd_pol_gpio,
+					info->micd_modes[mode].gpio);
 	regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
 			   ARIZONA_MICD_BIAS_SRC_MASK,
 			   info->micd_modes[mode].bias);
-- 
1.7.10.4

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