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drm/radeon: fix the crash in benchmark functions

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radeon_copy_dma and radeon_copy_blit must be called with
a valid reservation object. Otherwise a crash will be provoked.
We borrow the object from destination BO.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=88464

Cc: stable@vger.kernel.org
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Ilija Hadzic 2015-01-30 00:38:43 -05:00 committed by Alex Deucher
parent a124d068bf
commit 3f5e1b4f58
1 changed files with 8 additions and 5 deletions
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13
drivers/gpu/drm/radeon/radeon_benchmark.c
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@ -34,7 +34,8 @@
static int radeon_benchmark_do_move(struct radeon_device *rdev, unsigned size,
uint64_t saddr, uint64_t daddr,
int flag, int n)
int flag, int n,
struct reservation_object *resv)
{
unsigned long start_jiffies;
unsigned long end_jiffies;
@ -47,12 +48,12 @@ static int radeon_benchmark_do_move(struct radeon_device *rdev, unsigned size,
case RADEON_BENCHMARK_COPY_DMA:
fence = radeon_copy_dma(rdev, saddr, daddr,
size / RADEON_GPU_PAGE_SIZE,
NULL);
resv);
break;
case RADEON_BENCHMARK_COPY_BLIT:
fence = radeon_copy_blit(rdev, saddr, daddr,
size / RADEON_GPU_PAGE_SIZE,
NULL);
resv);
break;
default:
DRM_ERROR("Unknown copy method\n");
@ -120,7 +121,8 @@ static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size,
if (rdev->asic->copy.dma) {
time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
RADEON_BENCHMARK_COPY_DMA, n);
RADEON_BENCHMARK_COPY_DMA, n,
dobj->tbo.resv);
if (time < 0)
goto out_cleanup;
if (time > 0)
@ -130,7 +132,8 @@ static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size,
if (rdev->asic->copy.blit) {
time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
RADEON_BENCHMARK_COPY_BLIT, n);
RADEON_BENCHMARK_COPY_BLIT, n,
dobj->tbo.resv);
if (time < 0)
goto out_cleanup;
if (time > 0)