drm/amdgpu: fix num_rbs exposed to userspace (v2)

This was accidently broken for harvest cards when the
code was refactored for Polaris support.

v2: multiply by shader engines.  Noticed by Nicolai.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 40a2370..d851ea1 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -447,7 +447,8 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
                        dev_info.max_memory_clock = adev->pm.default_mclk * 10;
                }
                dev_info.enabled_rb_pipes_mask = adev->gfx.config.backend_enable_mask;
-               dev_info.num_rb_pipes = adev->gfx.config.num_rbs;
+               dev_info.num_rb_pipes = adev->gfx.config.max_backends_per_se *
+                       adev->gfx.config.max_shader_engines;
                dev_info.num_hw_gfx_contexts = adev->gfx.config.max_hw_contexts;
                dev_info._pad = 0;
                dev_info.ids_flags = 0;