From: Chen-Yu Tsai wenst@chromium.org
stable inclusion from stable-v5.10.110 commit 861946289d4a9f64269563469fa6a2f6a7c9240f bugzilla: https://gitee.com/openeuler/kernel/issues/I574AL
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 54fe55fb384ade630ef20b9a8b8f3b2a89ad97f2 ]
mtk_pconf_group_get(), used to read back pingroup pin config state, simply returns a set of configs saved from a previous invocation of mtk_pconf_group_set(). This is an unfiltered, unvalidated set passed in from the pinconf core, which does not match the current hardware state.
Since the driver library is designed to have one pin per group, pass through mtk_pconf_group_get() to mtk_pinconf_get(), to read back the current pin config state of the only pin in the group.
Also drop the assignment of pin config state to the group.
Fixes: 805250982bb5 ("pinctrl: mediatek: add pinctrl-paris that implements the vendor dt-bindings") Signed-off-by: Chen-Yu Tsai wenst@chromium.org Reviewed-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com Link: https://lore.kernel.org/r/20220308100956.2750295-5-wenst@chromium.org Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yu Liao liaoyu15@huawei.com Reviewed-by: Wei Li liwei391@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/pinctrl/mediatek/pinctrl-paris.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c index 9b268ad4e1b8..2f3c65265e23 100644 --- a/drivers/pinctrl/mediatek/pinctrl-paris.c +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c @@ -714,10 +714,10 @@ static int mtk_pconf_group_get(struct pinctrl_dev *pctldev, unsigned group, unsigned long *config) { struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev); + struct mtk_pinctrl_group *grp = &hw->groups[group];
- *config = hw->groups[group].config; - - return 0; + /* One pin per group only */ + return mtk_pinconf_get(pctldev, grp->pin, config); }
static int mtk_pconf_group_set(struct pinctrl_dev *pctldev, unsigned group, @@ -733,8 +733,6 @@ static int mtk_pconf_group_set(struct pinctrl_dev *pctldev, unsigned group, pinconf_to_config_argument(configs[i])); if (ret < 0) return ret; - - grp->config = configs[i]; }
return 0;