linux-kernel - [PATCH v3 4/4] regulator: tps65090: Fix gpio initialization

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Date:	Mon,  3 Nov 2014 19:12:07 +0100
From:	Markus Pargmann <mpa@...gutronix.de>
To:	Mark Brown <broonie@...nel.org>
Cc:	Liam Girdwood <lgirdwood@...il.com>,
	Krzysztof Kozłowski <k.kozlowski@...sung.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	kernel@...gutronix.de, Markus Pargmann <mpa@...gutronix.de>
Subject: [PATCH v3 4/4] regulator: tps65090: Fix gpio initialization

The config is used for multiple regulators within a for loop. The config
field is not cleared before it is used for the next item. To avoid any
issues this patch adds a proper initialization for the config->ena_gpio
field in case no gpio is available.

Signed-off-by: Markus Pargmann <mpa@...gutronix.de>
---
 drivers/regulator/tps65090-regulator.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/regulator/tps65090-regulator.c b/drivers/regulator/tps65090-regulator.c
index 2e92aa8718cc..f1df4423d361 100644
--- a/drivers/regulator/tps65090-regulator.c
+++ b/drivers/regulator/tps65090-regulator.c
@@ -314,6 +314,9 @@ static void tps65090_configure_regulator_config(
 		config->ena_gpio = tps_pdata->gpio;
 		config->ena_gpio_initialized = true;
 		config->ena_gpio_flags = gpio_flag;
+	} else {
+		config->ena_gpio = -EINVAL;
+		config->ena_gpio_initialized = false;
 	}
 }
 
-- 
2.1.1

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