linux-kernel - [PATCH v2 2/4] i2c: rcar: enable RuntimePM before registering to the core

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Date:	Fri,  9 Oct 2015 10:39:25 +0100
From:	Wolfram Sang <wsa@...-dreams.de>
To:	linux-sh@...r.kernel.org
Cc:	Wolfram Sang <wsa@...-dreams.de>, linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/4] i2c: rcar: enable RuntimePM before registering to the core

From: Wolfram Sang <wsa+renesas@...g-engineering.com>

The core may register clients attached to this master which may use
funtionality from the master. So, RuntimePM must be enabled before, otherwise
this will fail. While here, move drvdata, too.

Reported-by: Geert Uytterhoeven <geert+renesas@...der.be>
Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---
 drivers/i2c/busses/i2c-rcar.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index d8361dada58455..d8b5a8fee1e6c8 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -690,15 +690,16 @@ static int rcar_i2c_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	pm_runtime_enable(dev);
+	platform_set_drvdata(pdev, priv);
+
 	ret = i2c_add_numbered_adapter(adap);
 	if (ret < 0) {
 		dev_err(dev, "reg adap failed: %d\n", ret);
+		pm_runtime_disable(dev);
 		return ret;
 	}
 
-	pm_runtime_enable(dev);
-	platform_set_drvdata(pdev, priv);
-
 	dev_info(dev, "probed\n");
 
 	return 0;
-- 
2.1.4

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