From: Wolfram Sang <wsa+renesas@sang-engineering.com>
Date: Fri, 9 Oct 2015 09:39:25 +0000 (+0100)
Subject: i2c: rcar: enable RuntimePM before registering to the core
X-Git-Tag: v3.16.35~1134
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=33be69da00dfca2169910e300fec034640675994;p=thirdparty%2Fkernel%2Fstable.git

i2c: rcar: enable RuntimePM before registering to the core

commit 4f7effddf4549d57114289f273710f077c4c330a upstream.

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@glider.be>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
---

diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index 772d76ad036f9..0138b3c328877 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -583,15 +583,16 @@ 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;