diff options
| author | Zhiyong Tao <zhiyong.tao@mediatek.com> | 2021-03-21 06:31:50 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2021-03-25 12:14:50 +0300 |
| commit | 42a46434e9b18b35d2e57433cdbeff3233ca9765 (patch) | |
| tree | 2ae95aa6a5a8d58de13a40b233e859c853d861c3 /drivers/pinctrl/mediatek/pinctrl-paris.c | |
| parent | 1517dad8e7129c5e28bd7b536c560f0f0bff87a4 (diff) | |
| download | linux-42a46434e9b18b35d2e57433cdbeff3233ca9765.tar.xz | |
pinctrl: add lock in mtk_rmw function.
When multiple threads operate on the same register resource
which include multiple pin, It will make the register resource
wrong to control. So we add lock to avoid the case.
Signed-off-by: Zhiyong Tao <zhiyong.tao@mediatek.com>
Link: https://lore.kernel.org/r/20210321033150.15380-2-zhiyong.tao@mediatek.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/mediatek/pinctrl-paris.c')
| -rw-r--r-- | drivers/pinctrl/mediatek/pinctrl-paris.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c index da1f19288aa6..48e823f6d293 100644 --- a/drivers/pinctrl/mediatek/pinctrl-paris.c +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c @@ -970,6 +970,8 @@ int mtk_paris_pinctrl_probe(struct platform_device *pdev, hw->nbase = hw->soc->nbase_names; + mutex_init(&hw->lock); + err = mtk_pctrl_build_state(pdev); if (err) { dev_err(&pdev->dev, "build state failed: %d\n", err); |