On Tue, May 4, 2021 at 6:37 PM Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
>
> With CONFIG_ACPI=n and -Werror, 0-day reports:
>
> drivers/iio/humidity/am2315.c:259:36: error:
> 'am2315_acpi_id' defined but not used
>
> According to Andy Shevchenko, the ACPI ID used in this driver is fake
> and does not really exist. Remove it and with it ACPI support from
> the driver.
As I have found zarro evidences, I agree with removal. We must not
create fake ACPI IDs on our owns. If anybody will find a device that
is using this broken ID for real, then we may add it back.
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Cc: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
> Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> v2: Instead of making am2315_acpi_id depend on CONFIG_ACPI,
> remove ACPI support entirely.
>
> drivers/iio/humidity/am2315.c | 9 ---------
> 1 file changed, 9 deletions(-)
>
> diff --git a/drivers/iio/humidity/am2315.c b/drivers/iio/humidity/am2315.c
> index 23bc9c784ef4..8d7ec2f5acf8 100644
> --- a/drivers/iio/humidity/am2315.c
> +++ b/drivers/iio/humidity/am2315.c
> @@ -7,7 +7,6 @@
> * 7-bit I2C address: 0x5C.
> */
>
> -#include <linux/acpi.h>
> #include <linux/delay.h>
> #include <linux/i2c.h>
> #include <linux/kernel.h>
> @@ -256,17 +255,9 @@ static const struct i2c_device_id am2315_i2c_id[] = {
> };
> MODULE_DEVICE_TABLE(i2c, am2315_i2c_id);
>
> -static const struct acpi_device_id am2315_acpi_id[] = {
> - {"AOS2315", 0},
> - {}
> -};
> -
> -MODULE_DEVICE_TABLE(acpi, am2315_acpi_id);
> -
> static struct i2c_driver am2315_driver = {
> .driver = {
> .name = "am2315",
> - .acpi_match_table = ACPI_PTR(am2315_acpi_id),
> },
> .probe = am2315_probe,
> .id_table = am2315_i2c_id,
> --
> 2.25.1
>
--
With Best Regards,
Andy Shevchenko
