[PATCH 1/1] drivers/media/dvb-frontends/dib8000.c: replace shift loop by ilog2

[Fabian Frederick]

Cc: Mauro Carvalho Chehab <m.chehab@xxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Fabian Frederick <fabf@xxxxxxxxx>
---
 drivers/media/dvb-frontends/dib8000.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/media/dvb-frontends/dib8000.c b/drivers/media/dvb-frontends/dib8000.c
index 1632d78..8625634 100644
--- a/drivers/media/dvb-frontends/dib8000.c
+++ b/drivers/media/dvb-frontends/dib8000.c
@@ -1922,14 +1922,12 @@ static const s32 lut_1000ln_mant[] =
 s32 dib8000_get_adc_power(struct dvb_frontend *fe, u8 mode)
 {
 	struct dib8000_state *state = fe->demodulator_priv;
-	u32 ix = 0, tmp_val = 0, exp = 0, mant = 0;
+	u32 ix = 0, exp = 0, mant = 0;
 	s32 val;
 
 	val = dib8000_read32(state, 384);
 	if (mode) {
-		tmp_val = val;
-		while (tmp_val >>= 1)
-			exp++;
+		exp = ilog2(val);
 		mant = (val * 1000 / (1<<exp));
 		ix = (u8)((mant-1000)/100); /* index of the LUT */
 		val = (lut_1000ln_mant[ix] + 693*(exp-20) - 6908);
-- 
1.8.4.5

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