Re: [PATCH 4/4] acpi/x86: s2idle: Add a quirk for ASUS TUF Gaming A17 FA707RE

[Philipp Zabel]

Am Fri, Sep 09, 2022 at 01:05:09PM -0500 schrieb Mario Limonciello:
> ASUS TUF Gaming A17 FA707RE has problems with ACPI events after
> s2idle resume.  It's from a missing call to an ASL method in AMD
> the s2idle calling path. Force the system to use the Microsoft
> Modern Standby calling path instead.
> 
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=216101
> Reported-and-tested-by: catalin@xxxxxxxxxxx
> Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
> ---
>  drivers/acpi/x86/s2idle.c | 24 ++++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
> 
> diff --git a/drivers/acpi/x86/s2idle.c b/drivers/acpi/x86/s2idle.c
> index a9b0f2b54a1c..6a2c94fdbeae 100644
> --- a/drivers/acpi/x86/s2idle.c
> +++ b/drivers/acpi/x86/s2idle.c
> @@ -17,6 +17,7 @@
>  
>  #include <linux/acpi.h>
>  #include <linux/device.h>
> +#include <linux/dmi.h>
>  #include <linux/suspend.h>
>  
>  #include "../sleep.h"
> @@ -400,6 +401,28 @@ static const struct acpi_device_id amd_hid_ids[] = {
>  	{}
>  };
>  
> +static int lps0_prefer_microsoft(const struct dmi_system_id *id)
> +{
> +	pr_debug("Preferring Microsoft GUID.\n");
> +	prefer_microsoft_guid = true;
> +	return 0;
> +}
> +
> +static const struct dmi_system_id s2idle_dmi_table[] __initconst = {

This caused a build warning ...

[...]
> @@ -568,6 +591,7 @@ static const struct platform_s2idle_ops acpi_s2idle_ops_lps0 = {
>  
>  void acpi_s2idle_setup(void)
>  {
> +	dmi_check_system(s2idle_dmi_table);

... since it is used from a non-__init function:

  WARNING: modpost: vmlinux.o: section mismatch in reference: acpi_s2idle_setup (section: .text) -> s2idle_dmi_table (section: .init.rodata)

regards
Philipp