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c3b0c06b73
Return -ENOTSUPP instead of -EINVAL when encountering unsupported pin configuration parameters. This is more logical and allows the GPIO subsystem to gracefully handle unsupported parameters via functions like gpio_set_config_with_argument_optional(), which specifically ignores -ENOTSUPP but treats others as failure. Signed-off-by: Junhui Liu <junhui.liu@pigmoral.tech> Reviewed-by: Anand Moon <linux.amoon@gmail.com> Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Reviewed-by: Yixun Lan <dlan@kernel.org> Signed-off-by: Linus Walleij <linusw@kernel.org>