Since our common driver need support main chip and PMU at the same time, that means it will register two pinctrl device, and the pinctrl_desc structure should be used two times. But pinctrl_desc use global static definition, then the latest registered pinctrl device will overwrite the old one's, all members in pinctrl_desc will set to the new one's, such as name, pins and pins numbers, etc. This is a bug. Move pinctrl_desc into mtk_pinctrl, assign new value for each pinctrl device to fix it. Cc: stable@xxxxxxxxxxxxxxx # v4.1+ Signed-off-by: Hongzhou Yang <hongzhou.yang@xxxxxxxxxxxx> Reviewed-by: Axel Lin <axel.lin@xxxxxxxxxx> --- In order to fix multiple registration issue, move pinctrl_desc into mtk_pinctrl, assign new value for each pinctrl device. drivers/pinctrl/mediatek/pinctrl-mtk-common.c | 21 ++++++++++----------- drivers/pinctrl/mediatek/pinctrl-mtk-common.h | 1 + 2 files changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c index ad1ea16..4a52072 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c @@ -1202,12 +1202,6 @@ static int mtk_pctrl_build_state(struct platform_device *pdev) return 0; } -static struct pinctrl_desc mtk_pctrl_desc = { - .confops = &mtk_pconf_ops, - .pctlops = &mtk_pctrl_ops, - .pmxops = &mtk_pmx_ops, -}; - int mtk_pctrl_init(struct platform_device *pdev, const struct mtk_pinctrl_devdata *data, struct regmap *regmap) @@ -1265,12 +1259,17 @@ int mtk_pctrl_init(struct platform_device *pdev, for (i = 0; i < pctl->devdata->npins; i++) pins[i] = pctl->devdata->pins[i].pin; - mtk_pctrl_desc.name = dev_name(&pdev->dev); - mtk_pctrl_desc.owner = THIS_MODULE; - mtk_pctrl_desc.pins = pins; - mtk_pctrl_desc.npins = pctl->devdata->npins; + + pctl->pctl_desc.name = dev_name(&pdev->dev); + pctl->pctl_desc.owner = THIS_MODULE; + pctl->pctl_desc.pins = pins; + pctl->pctl_desc.npins = pctl->devdata->npins; + pctl->pctl_desc.confops = &mtk_pconf_ops; + pctl->pctl_desc.pctlops = &mtk_pctrl_ops; + pctl->pctl_desc.pmxops = &mtk_pmx_ops; pctl->dev = &pdev->dev; - pctl->pctl_dev = pinctrl_register(&mtk_pctrl_desc, &pdev->dev, pctl); + + pctl->pctl_dev = pinctrl_register(&pctl->pctl_desc, &pdev->dev, pctl); if (IS_ERR(pctl->pctl_dev)) { dev_err(&pdev->dev, "couldn't register pinctrl driver\n"); return PTR_ERR(pctl->pctl_dev); diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.h b/drivers/pinctrl/mediatek/pinctrl-mtk-common.h index 30213e5..c532c23 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.h +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.h @@ -256,6 +256,7 @@ struct mtk_pinctrl_devdata { struct mtk_pinctrl { struct regmap *regmap1; struct regmap *regmap2; + struct pinctrl_desc pctl_desc; struct device *dev; struct gpio_chip *chip; struct mtk_pinctrl_group *groups; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html