Re: [PATCH] i2c: i801: use IS_ENABLED() instead of checking for built-in or module

From: Jean Delvare
Date: Fri Jul 22 2016 - 06:00:42 EST


On Thu, 21 Jul 2016 12:11:01 -0400, Javier Martinez Canillas wrote:
> The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either
> built-in or as a module, use that macro instead of open coding the same.
>
> Using the macro makes the code more readable by helping abstract away some
> of the Kconfig built-in and module enable details.
>
> Signed-off-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
> ---
>
> drivers/i2c/busses/i2c-i801.c | 9 +++------
> 1 file changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
> index 68cec6128ac0..5ef9b733d153 100644
> --- a/drivers/i2c/busses/i2c-i801.c
> +++ b/drivers/i2c/busses/i2c-i801.c
> @@ -98,8 +98,7 @@
> #include <linux/platform_data/itco_wdt.h>
> #include <linux/pm_runtime.h>
>
> -#if (defined CONFIG_I2C_MUX_GPIO || defined CONFIG_I2C_MUX_GPIO_MODULE) && \
> - defined CONFIG_DMI
> +#if IS_ENABLED(CONFIG_I2C_MUX_GPIO) && defined CONFIG_DMI
> #include <linux/gpio.h>
> #include <linux/i2c-mux-gpio.h>
> #endif
> @@ -255,8 +254,7 @@ struct i801_priv {
> int len;
> u8 *data;
>
> -#if (defined CONFIG_I2C_MUX_GPIO || defined CONFIG_I2C_MUX_GPIO_MODULE) && \
> - defined CONFIG_DMI
> +#if IS_ENABLED(CONFIG_I2C_MUX_GPIO) && defined CONFIG_DMI
> const struct i801_mux_config *mux_drvdata;
> struct platform_device *mux_pdev;
> #endif
> @@ -1133,8 +1131,7 @@ static void __init input_apanel_init(void) {}
> static void i801_probe_optional_slaves(struct i801_priv *priv) {}
> #endif /* CONFIG_X86 && CONFIG_DMI */
>
> -#if (defined CONFIG_I2C_MUX_GPIO || defined CONFIG_I2C_MUX_GPIO_MODULE) && \
> - defined CONFIG_DMI
> +#if IS_ENABLED(CONFIG_I2C_MUX_GPIO) && defined CONFIG_DMI
> static struct i801_mux_config i801_mux_config_asus_z8_d12 = {
> .gpio_chip = "gpio_ich",
> .values = { 0x02, 0x03 },

Reviewed-by: Jean Delvare <jdelvare@xxxxxxx>

--
Jean Delvare
SUSE L3 Support