drm/amdgpu/gfx7: Simplify bitmask creation

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
index 2a8728c..5e858ca 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
@@ -1598,13 +1598,7 @@ void gfx_v7_0_select_se_sh(struct amdgpu_device *adev, u32 se_num, u32 sh_num)
  */
 static u32 gfx_v7_0_create_bitmask(u32 bit_width)
 {
-       u32 i, mask = 0;
-
-       for (i = 0; i < bit_width; i++) {
-               mask <<= 1;
-               mask |= 1;
-       }
-       return mask;
+       return (u32)((1ULL<<bit_width)-1);
 }
 
 /**