From: Tom St Denis <tom.stdenis@amd.com>
Date: Thu, 1 Sep 2016 17:31:35 +0000 (-0400)
Subject: drm/amd/amdgpu: Simplify mask creation in gfx6
X-Git-Tag: v5.15~12629^2~28^2~88
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=142333dbb9fbecf0e6693ac4545676f36225ee89;p=platform%2Fkernel%2Flinux-starfive.git

drm/amd/amdgpu: Simplify mask creation in gfx6

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

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
index 1f1b619..6569554 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
@@ -911,13 +911,7 @@ static void gfx_v6_0_select_se_sh(struct amdgpu_device *adev, u32 se_num,
 
 static u32 gfx_v6_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)(((u64)1 << bit_width) - 1);
 }
 
 static u32 gfx_v6_0_get_rb_disabled(struct amdgpu_device *adev,