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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, 7 Aug 2019 10:56:40 +0800 Tao Zhou wrote: > > > readq/writeq are not supported on all architectures > > Signed-off-by: Tao Zhou > --- > 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))); atomic64_read doesn't equal to readq on some architectures.. > 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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel