pinctrl: mediatek: Fix multiple registration issue.
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@vger.kernel.org # v4.1+
Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com>
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
index 23f2de0..f6cdeee 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
@@ -1202,12 +1202,6 @@
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 @@
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);