[PATCH] drm: amdgpu: fix comment about amdgpu.abmlevel defaults

[jeffbai at aosc.io]

Since 040fdcde288a2830edc31dd507963d6aadf990d2 ("drm/amdgpu: respect the
abmlevel module parameter value if it is set"), the default value for
amdgpu.abmlevel was set to -1, or auto. However, the comment explaining
the default value was not updated to reflect the change (-1, or auto; 
not
-1, or disabled).

Clarify that the default value (-1) means auto.

Fixes: 040fdcde288a2830edc31dd507963d6aadf990d2 ("drm/amdgpu: respect 
the abmlevel module parameter value if it is set")
Reported-by: Ruikai Liu <rickliu2000 at outlook.com>
Signed-off-by: Mingcong Bai <jeffbai at aosc.io>
---
  drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 81d9877c8735..b248d7096abc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -892,7 +892,7 @@ module_param_named(visualconfirm, 
amdgpu_dc_visual_confirm, uint, 0444);
   * the ABM algorithm, with 1 being the least reduction and 4 being the 
most
   * reduction.
   *
- * Defaults to -1, or disabled. Userspace can only override this level 
after
+ * Defaults to -1, or auto. Userspace can only override this level 
after
   * boot if it's set to auto.
   */
  int amdgpu_dm_abm_level = -1;
-- 
2.47.0