From 4c90aa94f6b3e33f57faaf19ef9819195dff61d3 Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Fri, 26 Nov 2010 17:19:34 +0000
Subject: mfd: Provide pm_runtime_no_callbacks flag in cell data

Allow MFD cells to have pm_runtime_no_callbacks() called on them during
registration. This causes the runtime PM framework to ignore them,
allowing use of runtime PM to suspend the device as a whole even if
not all drivers for the MFD can usefully implement runtime PM. For
example, RTCs are likely to run continuously regardless of the power
state of the system.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
---
 drivers/mfd/mfd-core.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'drivers/mfd/mfd-core.c')

diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
index ec99f68..d83ad0f 100644
--- a/drivers/mfd/mfd-core.c
+++ b/drivers/mfd/mfd-core.c
@@ -15,6 +15,7 @@
 #include <linux/platform_device.h>
 #include <linux/acpi.h>
 #include <linux/mfd/core.h>
+#include <linux/pm_runtime.h>
 #include <linux/slab.h>
 
 static int mfd_add_device(struct device *parent, int id,
@@ -82,6 +83,9 @@ static int mfd_add_device(struct device *parent, int id,
 	if (ret)
 		goto fail_res;
 
+	if (cell->pm_runtime_no_callbacks)
+		pm_runtime_no_callbacks(&pdev->dev);
+
 	kfree(res);
 
 	return 0;
-- 
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