linux-kernel - [PATCH v7 05/24] mfd: max77686: Return correct error when pdata isn't found

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Message-Id: <1404505467-26526-6-git-send-email-javier.martinez@collabora.co.uk>
Date:	Fri,  4 Jul 2014 22:24:08 +0200
From:	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
To:	Lee Jones <lee.jones@...aro.org>
Cc:	Mark Brown <broonie@...nel.org>,
	Mike Turquette <mturquette@...aro.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Doug Anderson <dianders@...omium.org>,
	Olof Johansson <olof@...om.net>,
	Tomeu Vizoso <tomeu.vizoso@...labora.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Yadwinder Singh Brar <yadi.brar01@...il.com>,
	Tushar Behera <trblinux@...il.com>,
	Andreas Farber <afaerber@...e.de>,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
Subject: [PATCH v7 05/24] mfd: max77686: Return correct error when pdata isn't found

When platform data is not found an -EIO (I/O error) code is returned.
This doesn't seem to be the correct error so better return -EINVAL
(Invalid argument) which is what most drivers do in this case.

Signed-off-by: Javier Martinez Canillas <javier.martinez@...labora.co.uk>
---
 drivers/mfd/max77686.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/max77686.c b/drivers/mfd/max77686.c
index 12d4c17..ada4976 100644
--- a/drivers/mfd/max77686.c
+++ b/drivers/mfd/max77686.c
@@ -129,7 +129,7 @@ static int max77686_i2c_probe(struct i2c_client *i2c,
 
 	if (!pdata) {
 		dev_err(&i2c->dev, "No platform data found.\n");
-		return -EIO;
+		return -EINVAL;
 	}
 
 	max77686 = devm_kzalloc(&i2c->dev,
-- 
2.0.0.rc2

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