linux-kernel - [ 05/26] drivers/rtc/rtc-twl.c: fix missing device_init

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Date:	Tue, 18 Jun 2013 09:14:45 -0700
From:	Greg Kroah-Hartman <greg@...ah.com>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Tony Lindgren <tony@...mide.com>,
	Kevin Hilman <khilman@...aro.org>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	Jingoo Han <jg1.han@...sung.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [ 05/26] drivers/rtc/rtc-twl.c: fix missing device_init_wakeup() when booted with device tree

From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Tony Lindgren <tony@...mide.com>

commit 24b8256a1fb28d357bc6fa09184ba29b4255ba5c upstream.

When booted in legacy mode device_init_wakeup() gets called by
drivers/mfd/twl-core.c when the children are initialized.  However, when
booted using device tree, the children are created with
of_platform_populate() instead add_children().

This means that the RTC driver will not have device_init_wakeup() set,
and we need to call it from the driver probe like RTC drivers typically
do.

Without this we cannot test PM wake-up events on omaps for cases where
there may not be any physical wake-up event.

Signed-off-by: Tony Lindgren <tony@...mide.com>
Reported-by: Kevin Hilman <khilman@...aro.org>
Cc: Alessandro Zummo <a.zummo@...ertech.it>
Cc: Jingoo Han <jg1.han@...sung.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/rtc/rtc-twl.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -523,6 +523,7 @@ static int __devinit twl_rtc_probe(struc
 	}
 
 	platform_set_drvdata(pdev, rtc);
+	device_init_wakeup(&pdev->dev, 1);
 	return 0;
 
 out2:


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