FW: [PATCH] drm/amd/display: fix static checker warning

[Michel Dänzer]

On 10/11/17 06:10 AM, S, Shirish wrote:
> On 11/7/2017 2:06 PM, Michel Dänzer wrote:
>> On 07/11/17 04:29 AM, S, Shirish wrote:
>>> From: Shirish S <shirish.s at amd.com>
>>>
>>> This patch fixes static checker warning of
>>> "warn: cast after binop" introduced by
>>> 4d3e00dad80a: "drm/amd/display : add high part address calculation for underlay"
>>>
>>> Signed-off-by: Shirish S <shirish.s at amd.com>
>>> ---
>>>   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++--
>>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c 
>>> b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>>> index a87e5ac..e1bdf5e 100644
>>> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>>> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>>> @@ -1827,7 +1827,7 @@ static int fill_plane_attributes_from_fb(struct amdgpu_device *adev,
>>>   						= lower_32_bits(fb_location);
>>>   		plane_state->address.video_progressive.luma_addr.high_part
>>>   						= upper_32_bits(fb_location);
>>> -		chroma_addr = fb_location + (u64)(awidth * fb->height);
>>> +		chroma_addr = fb_location + (u64)awidth * fb->height;
>>>   		plane_state->address.video_progressive.chroma_addr.low_part
>>>   						= lower_32_bits(chroma_addr);
>>>   		plane_state->address.video_progressive.chroma_addr.high_part
>>> @@ -2959,7 +2959,7 @@ static int dm_plane_helper_prepare_fb(struct drm_plane *plane,
>>>   							= lower_32_bits(afb->address);
>>>   			plane_state->address.video_progressive.luma_addr.high_part
>>>   							= upper_32_bits(afb->address);
>>> -			chroma_addr = afb->address + (u64)(awidth * new_state->fb->height);
>>> +			chroma_addr = afb->address + (u64)awidth * new_state->fb->height;
>>>   			plane_state->address.video_progressive.chroma_addr.low_part
>>>   							= lower_32_bits(chroma_addr);
>>>   			plane_state->address.video_progressive.chroma_addr.high_part
>>>
>> This code should really be removed, since fb_location is always 0 now 
>> in this function, so the values derived from it cannot be used for 
>> anything anyway.
> I remember Andrey had some concerns with it, if he is ok with it i
> can move it as a separate patch, for future bisect-ability.

Harry already removed this code in amd-staging-drm-next commit
f5887bb33b1e ("amdgpu/dm: Remove fb_location form fill_plane_attributes").


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer