2018-11-13 10:56:37

by Jerome Brunet

Subject: [PATCH] pinctrl: meson: fix pull enable register calculation

We just changed the code so we apply bias disable on the correct
register but forgot to align the register calculation. The result
is that we apply the change on the correct register, but possibly
at the incorrect offset/bit

This went undetected because offsets tends to be the same between
REG_PULL and REG_PULLEN for a given pin the EE controller. This
is not true for the AO controller.

Fixes: e39f9dd8206a ("pinctrl: meson: fix pinconf bias disable")
Signed-off-by: Jerome Brunet <[email protected]>
---
drivers/pinctrl/meson/pinctrl-meson.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c
index 53d449076dee..ea87d739f534 100644
--- a/drivers/pinctrl/meson/pinctrl-meson.c
+++ b/drivers/pinctrl/meson/pinctrl-meson.c
@@ -191,7 +191,8 @@ static int meson_pinconf_set(struct pinctrl_dev *pcdev, unsigned int pin,
case PIN_CONFIG_BIAS_DISABLE:
dev_dbg(pc->dev, "pin %u: disable bias\n", pin);

- meson_calc_reg_and_bit(bank, pin, REG_PULL, &reg, &bit);
+ meson_calc_reg_and_bit(bank, pin, REG_PULLEN, &reg,
+ &bit);
ret = regmap_update_bits(pc->reg_pullen, reg,
BIT(bit), 0);
if (ret)
--
2.19.1

2018-11-13 13:34:59

by Neil Armstrong

Subject: Re: [PATCH] pinctrl: meson: fix pull enable register calculation

On 13/11/2018 11:55, Jerome Brunet wrote:
> We just changed the code so we apply bias disable on the correct
> register but forgot to align the register calculation. The result
> is that we apply the change on the correct register, but possibly
> at the incorrect offset/bit
>
> This went undetected because offsets tends to be the same between
> REG_PULL and REG_PULLEN for a given pin the EE controller. This
> is not true for the AO controller.
>
> Fixes: e39f9dd8206a ("pinctrl: meson: fix pinconf bias disable")
> Signed-off-by: Jerome Brunet <[email protected]>
> ---
> drivers/pinctrl/meson/pinctrl-meson.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c
> index 53d449076dee..ea87d739f534 100644
> --- a/drivers/pinctrl/meson/pinctrl-meson.c
> +++ b/drivers/pinctrl/meson/pinctrl-meson.c
> @@ -191,7 +191,8 @@ static int meson_pinconf_set(struct pinctrl_dev *pcdev, unsigned int pin,
> case PIN_CONFIG_BIAS_DISABLE:
> dev_dbg(pc->dev, "pin %u: disable bias\n", pin);
>
> - meson_calc_reg_and_bit(bank, pin, REG_PULL, &reg, &bit);
> + meson_calc_reg_and_bit(bank, pin, REG_PULLEN, &reg,
> + &bit);
> ret = regmap_update_bits(pc->reg_pullen, reg,
> BIT(bit), 0);
> if (ret)
>

I saw it aswell,

Acked-by: Neil Armstrong <[email protected]>

2018-11-19 13:21:14

by Linus Walleij

Subject: Re: [PATCH] pinctrl: meson: fix pull enable register calculation

On Tue, Nov 13, 2018 at 11:55 AM Jerome Brunet <[email protected]> wrote:

> We just changed the code so we apply bias disable on the correct
> register but forgot to align the register calculation. The result
> is that we apply the change on the correct register, but possibly
> at the incorrect offset/bit
>
> This went undetected because offsets tends to be the same between
> REG_PULL and REG_PULLEN for a given pin the EE controller. This
> is not true for the AO controller.
>
> Fixes: e39f9dd8206a ("pinctrl: meson: fix pinconf bias disable")
> Signed-off-by: Jerome Brunet <[email protected]>

Patch applied for fixes.

Yours,
Linus Walleij