On 6/16/23 02:00, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@xxxxxxxx>
>
> The PM functions are never referenced when CONFIG_PM_SLEEP is
> disabled:
>
> sound/soc/codecs/max98388.c:854:12: error: unused function 'max98388_suspend' [-Werror,-Wunused-function]
> static int max98388_suspend(struct device *dev)
> ^
> sound/soc/codecs/max98388.c:864:12: error: unused function 'max98388_resume' [-Werror,-Wunused-function]
> static int max98388_resume(struct device *dev)
>
> Fix this by using the modern SYSTEM_SLEEP_PM_OPS() macro in place of
> the deprecated SET_SYSTEM_SLEEP_PM_OPS() version, and use pm_sleep_ptr()
> to hide the entire structure as well.
>
> On a related note, the of_match_ptr() and ACPI_PTR() macros have the same
> problem and would cause the device id table to be unused when the driver
> is built-in and the respective subsystems are disabled. This does not
> cause warnings unless -Wunused-const-variable is passed to the compiler,
> but it's better to just not use the macros at all here.
>
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Acked-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Tested-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> # build-tested
Thanks.
> ---
> sound/soc/codecs/max98388.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/sound/soc/codecs/max98388.c b/sound/soc/codecs/max98388.c
> index 8062a71150074..3d03c4bac6c55 100644
> --- a/sound/soc/codecs/max98388.c
> +++ b/sound/soc/codecs/max98388.c
> @@ -873,7 +873,7 @@ static int max98388_resume(struct device *dev)
> }
>
> static const struct dev_pm_ops max98388_pm = {
> - SET_SYSTEM_SLEEP_PM_OPS(max98388_suspend, max98388_resume)
> + SYSTEM_SLEEP_PM_OPS(max98388_suspend, max98388_resume)
> };
>
> static const struct regmap_config max98388_regmap = {
> @@ -998,9 +998,9 @@ MODULE_DEVICE_TABLE(acpi, max98388_acpi_match);
> static struct i2c_driver max98388_i2c_driver = {
> .driver = {
> .name = "max98388",
> - .of_match_table = of_match_ptr(max98388_of_match),
> - .acpi_match_table = ACPI_PTR(max98388_acpi_match),
> - .pm = &max98388_pm,
> + .of_match_table = max98388_of_match,
> + .acpi_match_table = max98388_acpi_match,
> + .pm = pm_sleep_ptr(&max98388_pm),
> },
> .probe = max98388_i2c_probe,
> .id_table = max98388_i2c_id,
--
~Randy
