Re: [PATCH 15/18] mfd: stpmic1: Fix swapped mask/unmask in irq chip

Lee Jones
2022-11-16T17:59:21Z

On Sat, 12 Nov 2022, Aidan MacDonald wrote:

> The usual behavior of mask registers is writing a '1' bit to
> disable (mask) an interrupt; similarly, writing a '1' bit to
> an unmask register enables (unmasks) an interrupt.
>
> Due to a longstanding issue in regmap-irq, mask and unmask
> registers were inverted when both kinds of registers were
> present on the same chip, ie. regmap-irq actually wrote '1's
> to the mask register to enable an IRQ and '1's to the unmask
> register to disable an IRQ.
>
> This was fixed by commit e8ffb12e7f06 ("regmap-irq: Fix
> inverted handling of unmask registers") but the fix is opt-in
> via mask_unmask_non_inverted = true because it requires manual
> changes for each affected driver. The new behavior will become
> the default once all drivers have been updated.
>
> The STPMIC1 has a normal mask register with separate set and
> clear registers. The driver intends to use the set & clear
> registers with regmap-irq and has compensated for regmap-irq's
> inverted behavior, and should currently be working properly.
> Thus, swap mask_base and unmask_base, and opt in to the new
> non-inverted behavior.
>
> Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
> ---
> drivers/mfd/stpmic1.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)

Applied, thanks.

--
Lee Jones [李琼斯]