[PATCH] drm/amd: Don't initialize ISP hardware without FW

[Alex Deucher]

On Tue, Jun 18, 2024 at 2:02 PM Mario Limonciello
<mario.limonciello at amd.com> wrote:
>
> Although designs may contain an ISP IP block, the camera might be a USB
> camera. Because of this the ISP firmware is considered optional from
> amdgpu.  However if the firmware doesn't get loaded the hardware should
> not be initialized.
>
> Adjust the return code for early init to ensure the IP block doesn't go
> through the other init and fini sequences. Also decrease the message
> about firmware load failure to debug so it's not as alarming to users.
>
> Signed-off-by: Mario Limonciello <mario.limonciello at amd.com>

Acked-by: Alex Deucher <alexander.deucher at amd.com>

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_isp.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_isp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_isp.c
> index 215bae809153..4766e99dd98f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_isp.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_isp.c
> @@ -142,8 +142,8 @@ static int isp_early_init(void *handle)
>         isp->parent = adev->dev;
>
>         if (isp_load_fw_by_psp(adev)) {
> -               DRM_WARN("%s: isp fw load failed\n", __func__);
> -               return 0;
> +               DRM_DEBUG_DRIVER("%s: isp fw load failed\n", __func__);
> +               return -ENOENT;
>         }
>
>         return 0;
> --
> 2.34.1
>