linux-kernel - Re: [PATCH] iio:accel:stk8312: Remove ACPI support

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Date:   Thu, 6 May 2021 10:30:12 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Guenter Roeck <linux@...ck-us.net>,
        Jonathan Cameron <jic23@...nel.org>
Cc:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel test robot <lkp@...el.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>
Subject: Re: [PATCH] iio:accel:stk8312: Remove ACPI support

Hi,

On 5/6/21 5:56 AM, Guenter Roeck wrote:
> With CONFIG_ACPI=n, W=1 and -Werror, 0-day reports:
> 
> drivers/iio/accel/stk8312.c:644:36: error:
> 	'stk8312_acpi_id' defined but not used
> 
> Apparently STK8312 is not a valid ACPI ID. Remove it and with it
> ACPI support from the stk8312 driver.
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Cc: Andy Shevchenko <andy.shevchenko@...il.com>
> Cc: Hans de Goede <hdegoede@...hat.com>
> Signed-off-by: Guenter Roeck <linux@...ck-us.net>

Thanks, patch looks good to me:

Reviewed-by: Hans de Goede <hdegoede@...hat.com>

Regards,

Hans



> ---
> There is another patch pending which makes whitespace changes in struct
> acpi_device_id stk8312_acpi_id. This will result in a conflict if this
> patch is applied. In that patch, it is claimed that the driver would
> possibly only be used based on its ACPI ID (even though that ACPI device
> ID is not official).
> Link: https://patchwork.kernel.org/project/linux-iio/patch/20210401144226.225928-1-jic23@kernel.org/
> I can not determine if that claim has any truth in it. Still, it appears
> that the device ID is not an official device ID.  
> 
>  drivers/iio/accel/stk8312.c | 9 ---------
>  1 file changed, 9 deletions(-)
> 
> diff --git a/drivers/iio/accel/stk8312.c b/drivers/iio/accel/stk8312.c
> index 157d8faefb9e..2fc30cfe1457 100644
> --- a/drivers/iio/accel/stk8312.c
> +++ b/drivers/iio/accel/stk8312.c
> @@ -7,7 +7,6 @@
>   * IIO driver for STK8312; 7-bit I2C address: 0x3D.
>   */
>  
> -#include <linux/acpi.h>
>  #include <linux/i2c.h>
>  #include <linux/interrupt.h>
>  #include <linux/kernel.h>
> @@ -640,18 +639,10 @@ static const struct i2c_device_id stk8312_i2c_id[] = {
>  };
>  MODULE_DEVICE_TABLE(i2c, stk8312_i2c_id);
>  
> -static const struct acpi_device_id stk8312_acpi_id[] = {
> -	{"STK8312", 0},
> -	{}
> -};
> -
> -MODULE_DEVICE_TABLE(acpi, stk8312_acpi_id);
> -
>  static struct i2c_driver stk8312_driver = {
>  	.driver = {
>  		.name = STK8312_DRIVER_NAME,
>  		.pm = STK8312_PM_OPS,
> -		.acpi_match_table = ACPI_PTR(stk8312_acpi_id),
>  	},
>  	.probe =            stk8312_probe,
>  	.remove =           stk8312_remove,
>