[PATCH 6.8 165/172] drm/amdgpu: fix incorrect number of active RBs for gfx11

Greg Kroah-Hartman
2024-04-15T14:31:50Z

From: Tim Huang <Tim.Huang@amd.com>

commit bbca7f414ae9a12ea231cdbafd79c607e3337ea8 upstream.

The RB bitmap should be global active RB bitmap &
active RB bitmap based on active SA.

Signed-off-by: Tim Huang <Tim.Huang@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -1630,7 +1630,7 @@ static void gfx_v11_0_setup_rb(struct am
active_rb_bitmap |= (0x3 << (i * rb_bitmap_width_per_sa));
}

- active_rb_bitmap |= global_active_rb_bitmap;
+ active_rb_bitmap &= global_active_rb_bitmap;
adev->gfx.config.backend_enable_mask = active_rb_bitmap;
adev->gfx.config.num_rbs = hweight32(active_rb_bitmap);
}