Use ffs() in phy_CalculateBitShift() to simplify the function and
improve readability.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
---
 drivers/staging/r8188eu/hal/rtl8188e_phycfg.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/r8188eu/hal/rtl8188e_phycfg.c b/drivers/staging/r8188eu/hal/rtl8188e_phycfg.c
index dea6d915a1f4..3d8fcc1f0b6a 100644
--- a/drivers/staging/r8188eu/hal/rtl8188e_phycfg.c
+++ b/drivers/staging/r8188eu/hal/rtl8188e_phycfg.c
@@ -25,13 +25,9 @@
 */
 static	u32 phy_CalculateBitShift(u32 BitMask)
 {
-	u32 i;
+	u32 i = ffs(BitMask);
 
-	for (i = 0; i <= 31; i++) {
-		if (((BitMask >> i) & 0x1) == 1)
-			break;
-	}
-	return i;
+	return i ? i - 1 : 32;
 }
 
 /**
-- 
2.37.1