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[PATCH] bcm43xx: Fix bug in frequency to channel conversion

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The frequency to channel routine in bcm43xx requires that the frequency
be in MHz, but that condition is not always met. This patch does the
necessary conversion.

Signed-off-by: Joerg Sommer <joerg@alea.gnuu.de>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Joerg Sommer 2007-03-02 12:32:06 -06:00 committed by John W. Linville
parent 01a597769c
commit d632f9fa38
1 changed files with 8 additions and 2 deletions
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10
drivers/net/wireless/bcm43xx/bcm43xx_wx.c
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@ -105,18 +105,24 @@ static int bcm43xx_wx_set_channelfreq(struct net_device *net_dev,
struct bcm43xx_private *bcm = bcm43xx_priv(net_dev);
unsigned long flags;
u8 channel;
s8 expon;
int freq;
int err = -EINVAL;
mutex_lock(&bcm->mutex);
spin_lock_irqsave(&bcm->irq_lock, flags);
if ((data->freq.m >= 0) && (data->freq.m <= 1000)) {
if ((data->freq.e == 0) &&
(data->freq.m >= 0) && (data->freq.m <= 1000)) {
channel = data->freq.m;
freq = bcm43xx_channel_to_freq(bcm, channel);
} else {
channel = bcm43xx_freq_to_channel(bcm, data->freq.m);
freq = data->freq.m;
expon = 6 - data->freq.e;
while (--expon >= 0) /* scale down the frequency to MHz */
freq /= 10;
assert(freq > 1000);
channel = bcm43xx_freq_to_channel(bcm, freq);
}
if (!ieee80211_is_valid_channel(bcm->ieee, channel))
goto out_unlock;