Hi Kevin,
On Thursday 25 April 2013 03:45 AM, Kevin Hilman wrote:
Sourav Poddar<sourav.poddar@xxxxxx> writes:
Remove "no_idle_on_suspend" check, since respective
driver should be able to prevent idling of a
device whenever required.
Driver's can get same behavior by just returning -EBUSY
from their ->runtime_suspend only during suspend.
Cc: Santosh Shilimkar<santosh.shilimkar@xxxxxx>
Cc: Felipe Balbi<balbi@xxxxxx>
Cc: Rajendra nayak<rnayak@xxxxxx>
Cc: Grygorii Strashko<grygorii.strashko@xxxxxx>
Signed-off-by: Sourav Poddar<sourav.poddar@xxxxxx>
Reviewed-by: Felipe Balbi<balbi@xxxxxx>
---
arch/arm/mach-omap2/omap_device.c | 12 +++---------
arch/arm/mach-omap2/omap_device.h | 10 ----------
2 files changed, 3 insertions(+), 19 deletions(-)
diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c
index 381be7a..2043d71 100644
--- a/arch/arm/mach-omap2/omap_device.c
+++ b/arch/arm/mach-omap2/omap_device.c
@@ -170,9 +170,6 @@ static int omap_device_build_from_dt(struct platform_device *pdev)
r->name = dev_name(&pdev->dev);
}
- if (of_get_property(node, "ti,no_idle_on_suspend", NULL))
- omap_device_disable_idle_on_suspend(pdev);
-
pdev->dev.pm_domain =&omap_device_pm_domain;
odbfd_exit1:
@@ -620,11 +617,9 @@ static int _od_suspend_noirq(struct device *dev)
ret = pm_generic_suspend_noirq(dev);
if (!ret&& !pm_runtime_status_suspended(dev)) {
- if (pm_generic_runtime_suspend(dev) == 0) {
- if (!(od->flags& OMAP_DEVICE_NO_IDLE_ON_SUSPEND))
- omap_device_idle(pdev);
+ if (pm_generic_runtime_suspend(dev) == 0)
+ omap_device_idle(pdev);
od->flags |= OMAP_DEVICE_SUSPENDED;
- }
Look closely at the if statement, followed by more than one line, and
the braces removed.
That means that od->flag will be set, even when omap_device_idle() was
not called. Which in turn means that upon resume, omap_device_enable()
will be called on a device that has not had omap_device_idle() called,
which means there would be WARNs coming from omap_device due to the
mismatch.
True, my bad. Will modify the code to bypass
"od->flags |= OMAP_DEVICE_SUSPENDED"
Hmm... this does not instill confidence that this code has been tested.
Sorry for the above glitch, I tested this code. I checked that the
system is able to resume from suspend state, but completely missed the
following statement in the log..
"[ 47.922424] omap_uart omap_uart.2: omap_device: omap_device_enable()
called from invalid state 1"
Kevin
}
return ret;
@@ -638,8 +633,7 @@ static int _od_resume_noirq(struct device *dev)
if ((od->flags& OMAP_DEVICE_SUSPENDED)&&
!pm_runtime_status_suspended(dev)) {
od->flags&= ~OMAP_DEVICE_SUSPENDED;
- if (!(od->flags& OMAP_DEVICE_NO_IDLE_ON_SUSPEND))
- omap_device_enable(pdev);
+ omap_device_enable(pdev);
pm_generic_runtime_resume(dev);
}
diff --git a/arch/arm/mach-omap2/omap_device.h b/arch/arm/mach-omap2/omap_device.h
index 044c31d..17ca1ae 100644
--- a/arch/arm/mach-omap2/omap_device.h
+++ b/arch/arm/mach-omap2/omap_device.h
@@ -38,7 +38,6 @@ extern struct dev_pm_domain omap_device_pm_domain;
/* omap_device.flags values */
#define OMAP_DEVICE_SUSPENDED BIT(0)
-#define OMAP_DEVICE_NO_IDLE_ON_SUSPEND BIT(1)
/**
* struct omap_device - omap_device wrapper for platform_devices
@@ -101,13 +100,4 @@ static inline struct omap_device *to_omap_device(struct platform_device *pdev)
{
return pdev ? pdev->archdata.od : NULL;
}
-
-static inline
-void omap_device_disable_idle_on_suspend(struct platform_device *pdev)
-{
- struct omap_device *od = to_omap_device(pdev);
-
- od->flags |= OMAP_DEVICE_NO_IDLE_ON_SUSPEND;
-}
-
#endif
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