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| author | Chen-Yu Tsai <wenst@chromium.org> | 2024-03-27 12:13:33 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-05-17 12:43:56 +0300 |
| commit | ef9ea1c4a7f8eba6ce55cb0c4d86e58ae9c8b3f2 (patch) | |
| tree | 3acc5144dc42e6ebf591caeda4ca84ce5778d2ff | |
| parent | 20c17102aac6e17ea8f1127a6bd1fe4f387c3536 (diff) | |
| download | linux-ef9ea1c4a7f8eba6ce55cb0c4d86e58ae9c8b3f2.tar.xz | |
pinctrl: mediatek: paris: Fix PIN_CONFIG_INPUT_SCHMITT_ENABLE readback
commit 08f66a8edd08f6f7cfa769c81634b29a2b123908 upstream.
In the generic pin config library, readback of some options are handled
differently compared to the setting of those options: the argument value
is used to convey enable/disable of an option in the set path, but
success or -EINVAL is used to convey if an option is enabled or disabled
in the debugfs readback path.
PIN_CONFIG_INPUT_SCHMITT_ENABLE is one such option. Fix the readback of
the option in the mediatek-paris library, so that the debugfs dump is
not showing "input schmitt enabled" for pins that don't have it enabled.
Fixes: 1bea6afbc842 ("pinctrl: mediatek: Refine mtk_pinconf_get()")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Message-ID: <20240327091336.3434141-2-wenst@chromium.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 54fc337f2eb3..126bf1a43b29 100644 --- a/drivers/pinctrl/mediatek/pinctrl-paris.c +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c @@ -141,6 +141,8 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev, } err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_SMT, &ret); + if (!ret) + err = -EINVAL; break; case PIN_CONFIG_DRIVE_STRENGTH: if (!hw->soc->drive_get) |