From: Wolfram Sang <wsa+renesas@sang-engineering.com>
Date: Fri, 9 Oct 2015 09:39:24 +0000 (+0100)
Subject: i2c: designware-platdrv: enable RuntimePM before registering to the core
X-Git-Tag: v4.2.5~20
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ff012faca18d004c99f32f3154c893d67f2297f;p=thirdparty%2Fkernel%2Fstable.git

i2c: designware-platdrv: enable RuntimePM before registering to the core

commit 36d48fb5766aee9717e429f772046696b215282d 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.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index e76514ff440c4..472b88285c755 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -273,12 +273,6 @@ static int dw_i2c_probe(struct platform_device *pdev)
 	adap->dev.parent = &pdev->dev;
 	adap->dev.of_node = pdev->dev.of_node;
 
-	r = i2c_add_numbered_adapter(adap);
-	if (r) {
-		dev_err(&pdev->dev, "failure adding adapter\n");
-		return r;
-	}
-
 	if (dev->pm_runtime_disabled) {
 		pm_runtime_forbid(&pdev->dev);
 	} else {
@@ -288,6 +282,13 @@ static int dw_i2c_probe(struct platform_device *pdev)
 		pm_runtime_enable(&pdev->dev);
 	}
 
+	r = i2c_add_numbered_adapter(adap);
+	if (r) {
+		dev_err(&pdev->dev, "failure adding adapter\n");
+		pm_runtime_disable(&pdev->dev);
+		return r;
+	}
+
 	return 0;
 }