linux-kernel - RE: [PATCH] drm/amdgpu: enable powerplay unconditionally

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Date:   Fri, 30 Sep 2016 16:26:42 +0000
From:   "Deucher, Alexander" <Alexander.Deucher@....com>
To:     'Arnd Bergmann' <arnd@...db.de>,
        "Koenig, Christian" <Christian.Koenig@....com>
CC:     David Airlie <airlied@...ux.ie>,
        "Zhou, Jammy" <Jammy.Zhou@....com>, "Zhu, Rex" <Rex.Zhu@....com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] drm/amdgpu: enable powerplay unconditionally

> -----Original Message-----
> From: Arnd Bergmann [mailto:arnd@...db.de]
> Sent: Friday, September 30, 2016 12:21 PM
> To: Deucher, Alexander; Koenig, Christian
> Cc: Arnd Bergmann; David Airlie; Zhou, Jammy; Zhu, Rex; dri-
> devel@...ts.freedesktop.org; linux-kernel@...r.kernel.org
> Subject: [PATCH] drm/amdgpu: enable powerplay unconditionally
> 
> Using the newly exported amd_set_clockgating_by_smu function in the
> main amdgpu driver
> means that we can no longer build the driver without also enabling the
> powerplay
> component, otherwise we get this link error:
> 
> ERROR: "amd_set_clockgating_by_smu"
> [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
> 
> The easiest way to avoid this error is to always enable the Kconfig symbol
> when
> the amdgpu driver is enabled.
> 
> Fixes: a8ca34136453 ("drm/amdgpu: set gfx clock gating for tonga/polaris.")
> Fixes: 1bb08f91b0f6 ("drm/amdgpu: set system clock gating for
> tonga/polaris.")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
> It's quite likely that there is a better way to do this, as the separation
> of the drivers is intentional. If my patch isn't acceptable, please come
> up with a different solution.

I've already removed the kconfig symbol altogether:
https://lists.freedesktop.org/archives/dri-devel/2016-September/119647.html

Alex

> ---
>  drivers/gpu/drm/amd/powerplay/Kconfig | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/powerplay/Kconfig
> b/drivers/gpu/drm/amd/powerplay/Kconfig
> index af380335b425..6d4f155a0453 100644
> --- a/drivers/gpu/drm/amd/powerplay/Kconfig
> +++ b/drivers/gpu/drm/amd/powerplay/Kconfig
> @@ -1,6 +1,4 @@
>  config DRM_AMD_POWERPLAY
> -	bool  "Enable AMD powerplay component"
> -	depends on DRM_AMDGPU
> -	default n
> +	def_bool DRM_AMDGPU
>  	help
>  	  select this option will enable AMD powerplay component.
> --
> 2.9.0