Arjan,

Please use this patch witch come from 2.6.37 instead of my patch name wl1271 
:Fix-problem-to-use-runtime.

Regards
Seb


>From 05aa55dddb9ee4045c320661068bea78dad6a6e5 Mon Sep 17 00:00:00 2001
From: Ohad Ben-Cohen <[email protected]>
Date: Thu, 9 Sep 2010 00:46:16 +0200
Subject: [PATCH] PM / Runtime: Lenient generic runtime pm callbacks

Allow drivers, that belong to subsystems which use the generic
runtime pm callbacks, not to define runtime pm suspend/resume handlers,
by implicitly assuming success in such cases.

This is needed to eliminate nop handlers that would otherwise be
necessary by drivers which enable runtime pm, but don't need
to do anything when their devices are runtime-suspended/resumed.

Signed-off-by: Ohad Ben-Cohen <[email protected]>
Acked-by: Kevin Hilman <[email protected]>
Acked-by: Mark Brown <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
---
 drivers/base/power/generic_ops.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/base/power/generic_ops.c b/drivers/base/power/generic_ops.c
index 4b29d49..81f2c84 100644
--- a/drivers/base/power/generic_ops.c
+++ b/drivers/base/power/generic_ops.c
@@ -46,7 +46,7 @@ int pm_generic_runtime_suspend(struct device *dev)
        const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
        int ret;
 
-       ret = pm && pm->runtime_suspend ? pm->runtime_suspend(dev) : -EINVAL;
+       ret = pm && pm->runtime_suspend ? pm->runtime_suspend(dev) : 0;
 
        return ret;
 }
@@ -65,7 +65,7 @@ int pm_generic_runtime_resume(struct device *dev)
        const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
        int ret;
 
-       ret = pm && pm->runtime_resume ? pm->runtime_resume(dev) : -EINVAL;
+       ret = pm && pm->runtime_resume ? pm->runtime_resume(dev) : 0;
 
        return ret;
 }
-- 
1.7.3.2

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