Hi,
On 2/24/2012 2:04 PM, Dmitry Torokhov wrote:
On Thu, Feb 23, 2012 at 03:10:51PM +0530, Viresh Kumar wrote:
From: Deepak Sikri<deepak.sikri@xxxxxx>
This patch handles the fix for unbalanced irq for the cases when
enable_irq_wake fails, and a warning related to same is displayed
on the console. The workaround is handled at the driver level.
So why is the device marked as wakeup capable?
The device is capable of wake up. There are cases in which the
enable_irq_wake call may fail.
This was specifically observed for ARM cortex architecture kernel
implementation for GIC (PL390).
The 2.6.37 kernel versions and before do not have the callbacks related
to function that help to set up
the wake up interrupts in GIC, and enable_irq_wake returns with an
error code -ENXIO.
Now if the user tries to disable the wake up interrupts in the resume
routines without checking in for the cases
where the enable_irq_wake failed, kernel returns a warning related to
unbalanced irq as we are trying to disable
an interrupt which was not enabled.
However, in case the enable_irq_wake is successful ( as was in case of
ARM9 architectures with VIC callbacks
present for setting up wake up interrupts present), this check allowed
to keep track of success cases.
Regards
Deepak
--
To unsubscribe from this list: send the line "unsubscribe linux-input" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
