Patch "i2c: qup: Fix order of runtime pm initialization" has been added to the 3.16-stable tree

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This is a note to let you know that I've just added the patch titled

    i2c: qup: Fix order of runtime pm initialization

to the 3.16-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     i2c-qup-fix-order-of-runtime-pm-initialization.patch
and it can be found in the queue-3.16 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 86b59bbfae2a895aa26b3d15f31b1a705dbfede1 Mon Sep 17 00:00:00 2001
From: Andy Gross <agross@xxxxxxxxxxxxxx>
Date: Mon, 29 Sep 2014 17:00:51 -0500
Subject: i2c: qup: Fix order of runtime pm initialization

From: Andy Gross <agross@xxxxxxxxxxxxxx>

commit 86b59bbfae2a895aa26b3d15f31b1a705dbfede1 upstream.

The runtime pm calls need to be done before populating the children via the
i2c_add_adapter call.  If this is not done, a child can run into issues trying
to do i2c read/writes due to the pm_runtime_sync failing.

Signed-off-by: Andy Gross <agross@xxxxxxxxxxxxxx>
Reviewed-by: Felipe Balbi <balbi@xxxxxx>
Acked-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/i2c/busses/i2c-qup.c |   12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

--- a/drivers/i2c/busses/i2c-qup.c
+++ b/drivers/i2c/busses/i2c-qup.c
@@ -670,16 +670,20 @@ static int qup_i2c_probe(struct platform
 	qup->adap.dev.of_node = pdev->dev.of_node;
 	strlcpy(qup->adap.name, "QUP I2C adapter", sizeof(qup->adap.name));
 
-	ret = i2c_add_adapter(&qup->adap);
-	if (ret)
-		goto fail;
-
 	pm_runtime_set_autosuspend_delay(qup->dev, MSEC_PER_SEC);
 	pm_runtime_use_autosuspend(qup->dev);
 	pm_runtime_set_active(qup->dev);
 	pm_runtime_enable(qup->dev);
+
+	ret = i2c_add_adapter(&qup->adap);
+	if (ret)
+		goto fail_runtime;
+
 	return 0;
 
+fail_runtime:
+	pm_runtime_disable(qup->dev);
+	pm_runtime_set_suspended(qup->dev);
 fail:
 	qup_i2c_disable_clocks(qup);
 	return ret;


Patches currently in stable-queue which might be from agross@xxxxxxxxxxxxxx are

queue-3.16/i2c-qup-fix-order-of-runtime-pm-initialization.patch
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