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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>
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Rafał Miłecki authored and John W. Linville committed Jan 15, 2010
1 parent e239d85 commit 857c0fc
Showing 1 changed file with 2 additions and 15 deletions.
17 changes: 2 additions & 15 deletions drivers/net/wireless/b43/phy_lp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1710,19 +1710,6 @@ static const struct lpphy_rx_iq_comp lpphy_rev2plus_iq_comp = {
.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)
{
struct lpphy_iq_est iq_est;
Expand All @@ -1749,8 +1736,8 @@ static int lpphy_calc_rx_iq_comp(struct b43_wldev *dev, u16 samples)
goto out;
}

prod_msb = lpphy_nbits(prod);
q_msb = lpphy_nbits(qpwr);
prod_msb = fls(abs(prod));
q_msb = fls(abs(qpwr));
tmp1 = prod_msb - 20;

if (tmp1 >= 0) {
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