[PATCH 1/1] drivers/video/fbdev/riva/riva_hw.c: replace shift loop by ilog2

[Fabian Frederick]

Cc: Jean-Christophe Plagniol-Villard <plagnioj@xxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Fabian Frederick <fabf@xxxxxxxxx>
---
 drivers/video/fbdev/riva/riva_hw.c | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/drivers/video/fbdev/riva/riva_hw.c b/drivers/video/fbdev/riva/riva_hw.c
index 78fdbf5..dae3504 100644
--- a/drivers/video/fbdev/riva/riva_hw.c
+++ b/drivers/video/fbdev/riva/riva_hw.c
@@ -640,9 +640,7 @@ static void nv3UpdateArbitrationSettings
     if (fifo_data.valid)
     {
         int  b = fifo_data.graphics_burst_size >> 4;
-        *burst = 0;
-        while (b >>= 1)
-	    (*burst)++;
+	*burst = ilog2(b);
         *lwm   = fifo_data.graphics_lwm >> 3;
     }
     else
@@ -831,9 +829,7 @@ static void nv4UpdateArbitrationSettings
     if (fifo_data.valid)
     {
         int  b = fifo_data.graphics_burst_size >> 4;
-        *burst = 0;
-        while (b >>= 1)
-	    (*burst)++;
+	*burst = ilog2(b);
         *lwm   = fifo_data.graphics_lwm >> 3;
     }
 }
@@ -1096,9 +1092,7 @@ static void nv10UpdateArbitrationSettings
     if (fifo_data.valid)
     {
         int  b = fifo_data.graphics_burst_size >> 4;
-        *burst = 0;
-        while (b >>= 1)
-	    (*burst)++;
+	*burst = ilog2(b);
         *lwm   = fifo_data.graphics_lwm >> 3;
     }
 }
@@ -1150,9 +1144,7 @@ static void nForceUpdateArbitrationSettings
     if (fifo_data.valid)
     {
         int  b = fifo_data.graphics_burst_size >> 4;
-        *burst = 0;
-        while (b >>= 1)
-	    (*burst)++;
+	*burst = ilog2(b);
         *lwm   = fifo_data.graphics_lwm >> 3;
     }
 }
-- 
1.8.4.5
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