linux-kernel - RE: [PATCH -next] thermal: intel_pch_thermal: fix build for ACPI not enabled

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Date:   Tue, 8 Dec 2020 14:01:14 +0000
From:   "Pawnikar, Sumeet R" <sumeet.r.pawnikar@...el.com>
To:     Randy Dunlap <rdunlap@...radead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        "Zhang, Rui" <rui.zhang@...el.com>,
        Amit Kucheria <amitk@...nel.org>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>
Subject: RE: [PATCH -next] thermal: intel_pch_thermal: fix build for ACPI not
 enabled

> -----Original Message-----
> From: Randy Dunlap <rdunlap@...radead.org>
> Sent: Tuesday, November 17, 2020 8:08 AM
> To: linux-kernel@...r.kernel.org
> Cc: Randy Dunlap <rdunlap@...radead.org>; Pawnikar, Sumeet R
> <sumeet.r.pawnikar@...el.com>; Daniel Lezcano <daniel.lezcano@...aro.org>;
> Zhang, Rui <rui.zhang@...el.com>; Amit Kucheria <amitk@...nel.org>; linux-
> pm@...r.kernel.org
> Subject: [PATCH -next] thermal: intel_pch_thermal: fix build for ACPI not
> enabled
> 
> The reference to acpi_gbl_FADT causes a build error when ACPI is not enabled.
> Fix by making that conditional on CONFIG_ACPI.
> 

Thanks for finding this issue and fixing it. 

Acked-by: Sumeet Pawnikar <sumeet.r.pawnikar@...el.com> 


> ../drivers/thermal/intel/intel_pch_thermal.c: In function 'pch_wpt_suspend':
> ../drivers/thermal/intel/intel_pch_thermal.c:217:8: error: 'acpi_gbl_FADT'
> undeclared (first use in this function); did you mean 'acpi_get_type'?
>   if (!(acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0))
>         ^~~~~~~~~~~~~
> 
> Fixes: ef63b043ac86 ("thermal: intel: pch: fix S0ix failure due to PCH
> temperature above threshold")
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: Sumeet Pawnikar <sumeet.r.pawnikar@...el.com>
> Cc: Daniel Lezcano <daniel.lezcano@...aro.org>
> Cc: Zhang Rui <rui.zhang@...el.com>
> Cc: Amit Kucheria <amitk@...nel.org>
> Cc: linux-pm@...r.kernel.org
> ---
>  drivers/thermal/intel/intel_pch_thermal.c |    4 ++++
>  1 file changed, 4 insertions(+)
> 
> --- linux-next-20201116.orig/drivers/thermal/intel/intel_pch_thermal.c
> +++ linux-next-20201116/drivers/thermal/intel/intel_pch_thermal.c
> @@ -214,8 +214,12 @@ static int pch_wpt_suspend(struct pch_th
>  	}
> 
>  	/* Do not check temperature if it is not a S0ix capable platform */
> +#ifdef CONFIG_ACPI
>  	if (!(acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0))
>  		return 0;
> +#else
> +	return 0;
> +#endif
> 
>  	/* Do not check temperature if it is not s2idle */
>  	if (pm_suspend_via_firmware())