On Monday, July 29, 2013 09:04:41 PM Felipe Balbi wrote:
> Hi,
>
> On Mon, Jul 29, 2013 at 07:45:09PM +0300, Illia Smyrnov wrote:
> > Enable/disable IRQ wake in suspend/resume handlers
> > to make the keypad wakeup capable.
> >
> > Signed-off-by: Illia Smyrnov <illia.smyrnov@xxxxxx>
> > ---
> >
> > drivers/input/keyboard/omap4-keypad.c | 43
> > +++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+)
> >
> > diff --git a/drivers/input/keyboard/omap4-keypad.c
> > b/drivers/input/keyboard/omap4-keypad.c index 0244262..feab00f 100644
> > --- a/drivers/input/keyboard/omap4-keypad.c
> > +++ b/drivers/input/keyboard/omap4-keypad.c
> > @@ -74,6 +74,7 @@ struct omap4_keypad {
> >
> > struct input_dev *input;
> >
> > void __iomem *base;
> >
> > + bool irq_wake_enabled;
>
> this flag is a bit weird... but I can't find a better way to handle this
> situation. In one way, you shouldn't prevent system suspend, so you can
> error out in case enable_irq_wake() fails, otoh if enable_irq_wake()
> fails and you return 0, on resume disable_irq_wake() will throw
> unbalanced calls warning. Maybe someone else has a better idea.
>
> > @@ -439,12 +444,50 @@ static const struct of_device_id
> > omap_keypad_dt_match[] = {>
> > MODULE_DEVICE_TABLE(of, omap_keypad_dt_match);
> > #endif
> >
> > +#ifdef CONFIG_PM_SLEEP
> > +static int omap4_keypad_suspend(struct device *dev)
> > +{
> > + struct platform_device *pdev = to_platform_device(dev);
>
> you don't need to access the platform_device...
>
> > + struct omap4_keypad *keypad_data = platform_get_drvdata(pdev);
>
> ... since this can become:
>
> struct omap4_keypad *keypad_data = dev_get_drvdata(dev);
No, please use correct accessors for the objects. Platform drivers deal
with platform devices and I prefer using platform_get_drvdata() on them.
Thanks.
--
Dmitry
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