Re: [PATCH 2/7] pinctrl: mediatek: paris: Fix PIN_CONFIG_BIAS_DISABLE readback

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Il 11/01/22 12:22, Chen-Yu Tsai ha scritto:
When reading back pin bias settings, if the pin is not in a
bias-disabled state, the function should return -EINVAL.

Fix this in the mediatek-paris pinctrl library so that the read back
state is not littered with bogus a "input bias disabled" combined with
"pull up" or "pull down" states.

Fixes: 805250982bb5 ("pinctrl: mediatek: add pinctrl-paris that implements the vendor dt-bindings")
Signed-off-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>


Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>

---
  drivers/pinctrl/mediatek/pinctrl-paris.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c
index f9f9110f2107..1ca598ea7ba7 100644
--- a/drivers/pinctrl/mediatek/pinctrl-paris.c
+++ b/drivers/pinctrl/mediatek/pinctrl-paris.c
@@ -97,8 +97,8 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev,
  			if (err)
  				goto out;
  			if (param == PIN_CONFIG_BIAS_DISABLE) {
-				if (ret == MTK_PUPD_SET_R1R0_00)
-					ret = MTK_DISABLE;
+				if (ret != MTK_PUPD_SET_R1R0_00)
+					err = -EINVAL;
  			} else if (param == PIN_CONFIG_BIAS_PULL_UP) {
  				/* When desire to get pull-up value, return
  				 *  error if current setting is pull-down




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