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drm/amdgpu: simplify and cleanup setting the dma mask

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Use dma_set_mask_and_coherent to set both masks in one go, and remove
the no longer required fallback, as the kernel now always accepts
larger than required DMA masks.  Fail the driver probe if we can't
set the DMA mask, as that means the system can only support a larger
mask.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christoph Hellwig
2019-08-15 09:27:03 +02:00
committed by Alex Deucher
parent 03127c58b9
commit 244511f386
6 changed files with 14 additions and 83 deletions
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drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@@ -789,7 +789,6 @@ struct amdgpu_device {
int usec_timeout;
const struct amdgpu_asic_funcs *asic_funcs;
bool shutdown;
bool need_dma32;
bool need_swiotlb;
bool accel_working;
struct notifier_block acpi_nb;