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drm/amdgpu: Only clear dumb buffers if ring is enabled

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The buffers should be cleared when possible but we also don't want
buffer creation to fail in the rare case where the ring isn't ready
during the call. This could happen during some suspend/resume sequences.

Cc: Christian König <ckoenig.leichtzumerken@gmail.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nicholas Kazlauskas 2019-03-11 14:16:29 -04:00 • committed by Alex Deucher
parent 95b1346872
commit 46846ba265
1 changed files with 10 additions and 3 deletions
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13
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
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@ -733,18 +733,25 @@ int amdgpu_mode_dumb_create(struct drm_file *file_priv,
struct amdgpu_device *adev = dev->dev_private;
struct drm_gem_object *gobj;
uint32_t handle;
u64 flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
u32 domain;
int r;
/*
* The buffer returned from this function should be cleared, but
* it can only be done if the ring is enabled or we'll fail to
* create the buffer.
*/
if (adev->mman.buffer_funcs_enabled)
flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED;
args->pitch = amdgpu_align_pitch(adev, args->width,
DIV_ROUND_UP(args->bpp, 8), 0);
args->size = (u64)args->pitch * args->height;
args->size = ALIGN(args->size, PAGE_SIZE);
domain = amdgpu_bo_get_preferred_pin_domain(adev,
amdgpu_display_supported_domains(adev));
r = amdgpu_gem_object_create(adev, args->size, 0, domain,
AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
AMDGPU_GEM_CREATE_VRAM_CLEARED,
r = amdgpu_gem_object_create(adev, args->size, 0, domain, flags,
ttm_bo_type_device, NULL, &gobj);
if (r)
return -ENOMEM;