> On Thu, Oct 06, 2022 at 07:22:18PM -0400, Richard Acayan wrote:
> > It may be necessary for some devices to specify reserved gpios in the
> > device-specific DTS, in addition to the reserved gpios common to all
> > devices with a given SoC. Remove this bitmap_fill() call so that the
> > settings applied to the gpio valid mask by DTS are not overridden by
> > the driver's reserved gpios.
> >
> > Signed-off-by: Richard Acayan <mailingradian@xxxxxxxxx>
> > ---
> > drivers/pinctrl/qcom/pinctrl-msm.c | 3 +--
> > 1 file changed, 1 insertion(+), 2 deletions(-)
> >
> > diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c
> > index a2abfe987ab1..f697e9f64360 100644
> > --- a/drivers/pinctrl/qcom/pinctrl-msm.c
> > +++ b/drivers/pinctrl/qcom/pinctrl-msm.c
> > @@ -687,9 +687,8 @@ static int msm_gpio_init_valid_mask(struct gpio_chip *gc,
> > const int *reserved = pctrl->soc->reserved_gpios;
> > u16 *tmp;
> >
> > - /* Driver provided reserved list overrides DT and ACPI */
> > + /* Driver provided reserved list overrides other settings here */
>
> IMHO this no longer overrides things, how about changing it to:
Technically, it doesn't. It skips the ACPI settings entirely:
if (reserved) {
for (i = 0; reserved[i] >= 0; i++) {
if (i >= ngpios || reserved[i] >= ngpios) {
dev_err(pctrl->dev, "invalid list of reserved GPIOs\n");
return -EINVAL;
}
clear_bit(reserved[i], valid_mask);
}
return 0;
}
/* The number of GPIOs in the ACPI tables */
len = ret = device_property_count_u16(pctrl->dev, "gpios");
if (ret < 0)
return 0;
>
> /* Remove driver-provided reserved GPIOs from valid_mask */
Will do. Let me know if you think the above information changes what the comment
should be.
>
>
> The rest of the change looks good and the commit message looks good. So
> please consider updating the comment and feel free to add my
>
> Reviewed-by: Bjorn Andersson <andersson@xxxxxxxxxx>
>
> Regards,
> Bjorn
>
> > if (reserved) {
> > - bitmap_fill(valid_mask, ngpios);
> > for (i = 0; reserved[i] >= 0; i++) {
> > if (i >= ngpios || reserved[i] >= ngpios) {
> > dev_err(pctrl->dev, "invalid list of reserved GPIOs\n");
> > --
> > 2.38.0
> >
