[Nouveau] [PATCH] drm/nouveau/therm/gp100: Do not report temperature when subdev is shadowed

[Rhys Kidd]

On 25 January 2018 at 13:16, Tobias Klausmann <
tobias.johannes.klausmann at mni.thm.de> wrote:

> This fixes wrong temperature outputs e.g. 511°C if the card is asleep.
>
> Signed-off-by: Tobias Klausmann <tobias.johannes.klausmann at mni.thm.de>
>

LGTM,

Reviewed-by: Rhys Kidd <rhyskidd at gmail.com>


> ---
>  drivers/gpu/drm/nouveau/nvkm/subdev/therm/gp100.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gp100.c
> b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gp100.c
> index 9f0dea3f61dc..45d0ec632b5a 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gp100.c
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gp100.c
> @@ -32,8 +32,10 @@ gp100_temp_get(struct nvkm_therm *therm)
>         u32 inttemp = (tsensor & 0x0001fff8);
>
>         /* device SHADOWed */
> -       if (tsensor & 0x40000000)
> +       if (tsensor & 0x40000000) {
>                 nvkm_trace(subdev, "reading temperature from SHADOWed
> sensor\n");
> +               return -ENODEV;
> +       }
>
>         /* device valid */
>         if (tsensor & 0x20000000)
> --
> 2.16.1
>
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