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b43: use standard fls for finding the most significant bit

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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rafał Miłecki 2010-01-15 12:01:49 +01:00 committed by John W. Linville
parent e239d85918
commit 857c0fc490
1 changed files with 2 additions and 15 deletions
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17
drivers/net/wireless/b43/phy_lp.c
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@ -1710,19 +1710,6 @@ static const struct lpphy_rx_iq_comp lpphy_rev2plus_iq_comp = {
.c0 = 0, .c0 = 0,
}; };
static u8 lpphy_nbits(s32 val)
{
u32 tmp = abs(val);
u8 nbits = 0;
while (tmp != 0) {
nbits++;
tmp >>= 1;
}
return nbits;
}
static int lpphy_calc_rx_iq_comp(struct b43_wldev *dev, u16 samples) static int lpphy_calc_rx_iq_comp(struct b43_wldev *dev, u16 samples)
{ {
struct lpphy_iq_est iq_est; struct lpphy_iq_est iq_est;
@ -1749,8 +1736,8 @@ static int lpphy_calc_rx_iq_comp(struct b43_wldev *dev, u16 samples)
goto out; goto out;
} }
prod_msb = lpphy_nbits(prod); prod_msb = fls(abs(prod));
q_msb = lpphy_nbits(qpwr); q_msb = fls(abs(qpwr));
tmp1 = prod_msb - 20; tmp1 = prod_msb - 20;
if (tmp1 >= 0) { if (tmp1 >= 0) {