Re: [PATCH] pinctrl: baytrail: Set IRQCHIP_SET_TYPE_MASKED flag on the irqchip

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxx>]

On Tue, Nov 23, 2021 at 01:08:30PM +0200, Mika Westerberg wrote:
> On Mon, Nov 22, 2021 at 11:04:23PM +0100, Hans de Goede wrote:
> > The byt_irq_type function ends with the IRQ masked, this means that calls
> > to irq_set_irq_type() while the IRQ is enabled end up masking it, which
> > is wrong. Add the IRQCHIP_SET_TYPE_MASKED flag to fix this.
> > 
> > This will make the IRQ core call mask() + unmask() on the IRQ around
> > a set_type() call when the IRQ is enabled at the type of the call.
> > 
> > Note in practice irq_set_irq_type() getting called while the IRQ is enabled
> > almost never happens. I hit this with a buggy DSDT where a wrongly active
> > (_STA returns 0xf) I2C ACPI devices point to an IRQ already in use by an
> > _AEI handler, leading to the irq_set_irq_type() call in
> > acpi_dev_gpio_irq_get_by() getting called while the IRQ is enabled.
> > 
> > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> 
> Acked-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>

Pushed to my review and testing queue, thanks!

-- 
With Best Regards,
Andy Shevchenko