We set the fb smem pointer to the offset into the BAR which doesn't handle framebuffers in system memory. Use virt_to_phys which should handle both BARs and system memory.
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=207581 Fixes: 6c8d74caa2fa33 ("drm/amdgpu: Enable scatter gather display support") Signed-off-by: Alex Deucher <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c index 25ddb482466a..caef156fbd1f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c @@ -205,7 +205,6 @@ static int amdgpufb_create(struct drm_fb_helper *helper, struct drm_gem_object *gobj = NULL; struct amdgpu_bo *abo = NULL; int ret; - unsigned long tmp; mode_cmd.width = sizes->surface_width; mode_cmd.height = sizes->surface_height; @@ -245,8 +244,7 @@ static int amdgpufb_create(struct drm_fb_helper *helper, info->fbops = &amdgpufb_ops; - tmp = amdgpu_bo_gpu_offset(abo) - adev->gmc.vram_start; - info->fix.smem_start = adev->gmc.aper_base + tmp; + info->fix.smem_start = virt_to_phys(amdgpu_bo_kptr(abo)); info->fix.smem_len = amdgpu_bo_size(abo); info->screen_base = amdgpu_bo_kptr(abo); info->screen_size = amdgpu_bo_size(abo); -- 2.25.4 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
