linux-kernel - Re: [PATCH] drm/radeon: fix VCE fence command

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Date:	Tue, 15 Apr 2014 11:17:22 +0200
From:	Christian König <christian.koenig@....com>
To:	"Deucher, Alexander" <Alexander.Deucher@....com>,
	Christoph Jaeger <christophjaeger@...ux.com>,
	"airlied@...ux.ie" <airlied@...ux.ie>
CC:	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/radeon: fix VCE fence command

Am 15.04.2014 00:13, schrieb Deucher, Alexander:
>> -----Original Message-----
>> From: Christoph Jaeger [mailto:christophjaeger@...ux.com]
>> Sent: Monday, April 14, 2014 6:10 PM
>> To: Deucher, Alexander; Koenig, Christian; airlied@...ux.ie
>> Cc: dri-devel@...ts.freedesktop.org; linux-kernel@...r.kernel.org; Christoph
>> Jaeger
>> Subject: [PATCH] drm/radeon: fix VCE fence command
>>
>> Due to a type mismatch that causes an implicit type conversion, the
>> upper 32 bits of the GPU address have been zeroed out when adding to the
>> command buffer.
>>
>> Picked up by Coverity - CID 1198624.
>>
>> Signed-off-by: Christoph Jaeger <christophjaeger@...ux.com>
> Good catch!

Indeed.

>
> Reviewed-by: Alex Deucher <alexander.deucher@....com>

Added to my 3.15 fixes queue.

Thanks,
Christian.

>
>> ---
>>   drivers/gpu/drm/radeon/radeon_vce.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/radeon/radeon_vce.c
>> b/drivers/gpu/drm/radeon/radeon_vce.c
>> index 76e9904..ced53dd 100644
>> --- a/drivers/gpu/drm/radeon/radeon_vce.c
>> +++ b/drivers/gpu/drm/radeon/radeon_vce.c
>> @@ -613,7 +613,7 @@ void radeon_vce_fence_emit(struct radeon_device
>> *rdev,
>>   			   struct radeon_fence *fence)
>>   {
>>   	struct radeon_ring *ring = &rdev->ring[fence->ring];
>> -	uint32_t addr = rdev->fence_drv[fence->ring].gpu_addr;
>> +	uint64_t addr = rdev->fence_drv[fence->ring].gpu_addr;
>>
>>   	radeon_ring_write(ring, VCE_CMD_FENCE);
>>   	radeon_ring_write(ring, addr);
>> --
>> 1.9.0

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