On Tue, Aug 6, 2019 at 10:56 PM Tao Zhou <[email protected]> wrote: > > readq/writeq are not supported on all architectures > > Signed-off-by: Tao Zhou <[email protected]>
Reviewed-by: Alex Deucher <[email protected]> > --- > drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 8 ++------ > 1 file changed, 2 insertions(+), 6 deletions(-) > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > index 558fe6d091ed..7eb9e0b9235a 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > @@ -272,14 +272,10 @@ void amdgpu_mm_wreg(struct amdgpu_device *adev, > uint32_t reg, uint32_t v, > */ > uint64_t amdgpu_mm_rreg64(struct amdgpu_device *adev, uint32_t reg) > { > - uint64_t ret; > - > if ((reg * 4) < adev->rmmio_size) > - ret = readq(((void __iomem *)adev->rmmio) + (reg * 4)); > + return atomic64_read((atomic64_t *)(adev->rmmio + (reg * 4))); > else > BUG(); > - > - return ret; > } > > /** > @@ -294,7 +290,7 @@ uint64_t amdgpu_mm_rreg64(struct amdgpu_device *adev, > uint32_t reg) > void amdgpu_mm_wreg64(struct amdgpu_device *adev, uint32_t reg, uint64_t v) > { > if ((reg * 4) < adev->rmmio_size) > - writeq(v, ((void __iomem *)adev->rmmio) + (reg * 4)); > + atomic64_set((atomic64_t *)(adev->rmmio + (reg * 4)), v); > else > BUG(); > } > -- > 2.17.1 > > _______________________________________________ > amd-gfx mailing list > [email protected] > https://lists.freedesktop.org/mailman/listinfo/amd-gfx _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
