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| author | Chen-Yu Tsai <wenst@chromium.org> | 2022-03-08 18:09:51 +0800 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2022-03-15 01:24:15 +0100 |
| commit | 1763933d377ecb05454f8d20e3c8922480db2ac0 (patch) | |
| tree | 13416251a9815163a948b55c4dbf57ef2e94a569 /drivers/pinctrl/mediatek | |
| parent | fcde2a3fc86c5974b34ba5cfb1b532fc00fefb8d (diff) | |
| download | linux-stable-1763933d377ecb05454f8d20e3c8922480db2ac0.tar.gz linux-stable-1763933d377ecb05454f8d20e3c8922480db2ac0.tar.bz2 linux-stable-1763933d377ecb05454f8d20e3c8922480db2ac0.zip | |
pinctrl: mediatek: paris: Skip custom extra pin config dump for virtual GPIOs
Virtual GPIOs do not have any hardware state associated with them. Any
attempt to read back hardware state for these pins result in error
codes.
Skip dumping extra pin config information for these virtual GPIOs.
Fixes: 184d8e13f9b1 ("pinctrl: mediatek: Add support for pin configuration dump via debugfs.")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220308100956.2750295-7-wenst@chromium.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/mediatek')
| -rw-r--r-- | drivers/pinctrl/mediatek/pinctrl-paris.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c index d4fde741e354..c8e74945401d 100644 --- a/drivers/pinctrl/mediatek/pinctrl-paris.c +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c @@ -581,6 +581,9 @@ ssize_t mtk_pctrl_show_one_pin(struct mtk_pinctrl *hw, if (gpio >= hw->soc->npins) return -EINVAL; + if (mtk_is_virt_gpio(hw, gpio)) + return -EINVAL; + desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio]; pinmux = mtk_pctrl_get_pinmux(hw, gpio); if (pinmux >= hw->soc->nfuncs) |