drm/radeon/kms: fix incorrect comparison in cayman setup code.

This was leading to a bogus value being programmed to the backend
routing register.

Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 57d3d6c..4e30e9e 100644 (file)
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -417,7 +417,7 @@ static u32 cayman_get_tile_pipe_to_backend_map(struct radeon_device *rdev,
                num_shader_engines = 1;
        if (num_shader_engines > rdev->config.cayman.max_shader_engines)
                num_shader_engines = rdev->config.cayman.max_shader_engines;
-       if (num_backends_per_asic > num_shader_engines)
+       if (num_backends_per_asic < num_shader_engines)
                num_backends_per_asic = num_shader_engines;
        if (num_backends_per_asic > (rdev->config.cayman.max_backends_per_se * num_shader_engines))
                num_backends_per_asic = rdev->config.cayman.max_backends_per_se * num_shader_engines;