linux-kernel - Re: [PATCH -next] drm/amdgpu: fix checking pmops when PM

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Date:   Fri, 30 Jul 2021 10:37:54 -0400
From:   Alex Deucher <alexdeucher@...il.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        Maling list - DRI developers 
        <dri-devel@...ts.freedesktop.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>
Subject: Re: [PATCH -next] drm/amdgpu: fix checking pmops when PM_SLEEP is not enabled

Applied.  Thanks!

Alex

On Thu, Jul 29, 2021 at 11:03 PM Randy Dunlap <rdunlap@...radead.org> wrote:
>
> 'pm_suspend_target_state' is only available when CONFIG_PM_SLEEP
> is set/enabled. OTOH, when both SUSPEND and HIBERNATION are not set,
> PM_SLEEP is not set, so this variable cannot be used.
>
> ../drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c: In function ‘amdgpu_acpi_is_s0ix_active’:
> ../drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:1046:11: error: ‘pm_suspend_target_state’ undeclared (first use in this function); did you mean ‘__KSYM_pm_suspend_target_state’?
>     return pm_suspend_target_state == PM_SUSPEND_TO_IDLE;
>            ^~~~~~~~~~~~~~~~~~~~~~~
>            __KSYM_pm_suspend_target_state
>
> Also use shorter IS_ENABLED(CONFIG_foo) notation for checking the
> 2 config symbols.
>
> Fixes: 91b03fc6b50c ("drm/amdgpu: Check pmops for desired suspend state")
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: Alex Deucher <alexander.deucher@....com>
> Cc: Christian König <christian.koenig@....com>
> Cc: "Pan, Xinhui" <Xinhui.Pan@....com>
> Cc: amd-gfx@...ts.freedesktop.org
> Cc: dri-devel@...ts.freedesktop.org
> Cc: linux-next@...r.kernel.org
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> --- linext-20210729.orig/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
> +++ linext-20210729/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
> @@ -1040,7 +1040,7 @@ void amdgpu_acpi_detect(void)
>   */
>  bool amdgpu_acpi_is_s0ix_active(struct amdgpu_device *adev)
>  {
> -#if defined(CONFIG_AMD_PMC) || defined(CONFIG_AMD_PMC_MODULE)
> +#if IS_ENABLED(CONFIG_AMD_PMC) && IS_ENABLED(CONFIG_PM_SLEEP)
>         if (acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0) {
>                 if (adev->flags & AMD_IS_APU)
>                         return pm_suspend_target_state == PM_SUSPEND_TO_IDLE;