# Re: \[PATCH v3 6/9\] radeon: Switch to arch\_phys\_wc\_add and add a missing ...\_del

- From: Jerome Glisse \<hidden\>
- Date: 2013-05-14 13:37:42 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2013/05/4049191
- Thread: https://ratatoskr.run/dri-devel/2013/05/4048815/t.md

```text
On Tue, May 14, 2013 at 8:58 AM, Alex Deucher [ref] wrote:
> On Mon, May 13, 2013 at 7:58 PM, Andy Lutomirski [ref] wrote:
>> Reviewed-by: Daniel Vetter <redacted>
>> Signed-off-by: Andy Lutomirski <luto@amacapital.net>
>
> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

I believe it will break something but we could deal with the fallout
once it happens.

>> ---
>>  drivers/gpu/drm/radeon/radeon_object.c | 5 +++--
>>  1 file changed, 3 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
>> index d3aface..15cd34b 100644
>> --- a/drivers/gpu/drm/radeon/radeon_object.c
>> +++ b/drivers/gpu/drm/radeon/radeon_object.c
>> @@ -321,8 +321,8 @@ void radeon_bo_force_delete(struct radeon_device *rdev)
>>  int radeon_bo_init(struct radeon_device *rdev)
>>  {
>>         /* Add an MTRR for the VRAM */
>> -       rdev->mc.vram_mtrr = mtrr_add(rdev->mc.aper_base, rdev->mc.aper_size,
>> -                       MTRR_TYPE_WRCOMB, 1);
>> +       rdev->mc.vram_mtrr = arch_phys_wc_add(rdev->mc.aper_base,
>> +                                             rdev->mc.aper_size);
>>         DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
>>                 rdev->mc.mc_vram_size >> 20,
>>                 (unsigned long long)rdev->mc.aper_size >> 20);
>> @@ -334,6 +334,7 @@ int radeon_bo_init(struct radeon_device *rdev)
>>  void radeon_bo_fini(struct radeon_device *rdev)
>>  {
>>         radeon_ttm_fini(rdev);
>> +       arch_phys_wc_del(rdev->mc.vram_mtrr);
>>  }
>>
>>  void radeon_bo_list_add_object(struct radeon_bo_list *lobj,
>> --
>> 1.8.1.4
>>
```