linux-kernel - [RESEND PATCH] mfd: max77843: Fix max77843_chg

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Date:	Mon, 21 Sep 2015 14:26:54 +0200
From:	Javier Martinez Canillas <javier@....samsung.com>
To:	linux-kernel@...r.kernel.org
Cc:	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	stable@...r.kernel.org,
	Javier Martinez Canillas <javier@....samsung.com>,
	Lee Jones <lee.jones@...aro.org>,
	Samuel Ortiz <sameo@...ux.intel.com>
Subject: [RESEND PATCH] mfd: max77843: Fix max77843_chg_init() return on error

If i2c_new_dummy() fails in max77843_chg_init(), an PTR_ERR(NULL) is
returned which is 0. So the function was wrongly returning a success
value instead of an error code.

Cc: stable@...r.kernel.org # 4.1
Fixes: c7f585fe46d8 ("mfd: max77843: Add max77843 MFD driver core driver")
Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>

---
Changes in the RESEND:
- Added Krzysztof's Reviewed-by tag.
- Added a tag for stable.

 drivers/mfd/max77843.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/max77843.c b/drivers/mfd/max77843.c
index c52162ea3d0a..586098f1b233 100644
--- a/drivers/mfd/max77843.c
+++ b/drivers/mfd/max77843.c
@@ -80,7 +80,7 @@ static int max77843_chg_init(struct max77693_dev *max77843)
 	if (!max77843->i2c_chg) {
 		dev_err(&max77843->i2c->dev,
 				"Cannot allocate I2C device for Charger\n");
-		return PTR_ERR(max77843->i2c_chg);
+		return -ENODEV;
 	}
 	i2c_set_clientdata(max77843->i2c_chg, max77843);
 
-- 
2.4.3

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