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rt2x00: Remove duplicate code 

Simplify rt2x00lib_config_antenna() by moving
duplicate code into a seperate static inlined
function.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ivo van Doorn 2008-12-02 18:20:22 +01:00 committed by John W. Linville
parent 42c8285767
commit 0b927a0791
1 changed files with 19 additions and 18 deletions
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37
drivers/net/wireless/rt2x00/rt2x00config.c
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@ -108,33 +108,34 @@ void rt2x00lib_config_erp(struct rt2x00_dev *rt2x00dev,
rt2x00dev->ops->lib->config_erp(rt2x00dev, &erp);
}
static inline
enum antenna rt2x00lib_config_antenna_check(enum antenna current_ant,
enum antenna default_ant)
{
if (current_ant != ANTENNA_SW_DIVERSITY)
return current_ant;
return (default_ant != ANTENNA_SW_DIVERSITY) ? default_ant : ANTENNA_B;
}
void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
struct antenna_setup *ant)
{
struct antenna_setup *def = &rt2x00dev->default_ant;
struct antenna_setup *active = &rt2x00dev->link.ant.active;
/*
* Failsafe: Make sure we are not sending the
* ANTENNA_SW_DIVERSITY state to the driver.
* If that happes fallback to hardware default,
* or our own default.
* The calls to rt2x00lib_config_antenna_check()
* might have caused that we restore back to the already
* active setting. If that has happened we can quit.
*/
if (ant->rx == ANTENNA_SW_DIVERSITY) {
if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
ant->rx = ANTENNA_B;
else
ant->rx = rt2x00dev->default_ant.rx;
}
if (ant->tx == ANTENNA_SW_DIVERSITY) {
if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
ant->tx = ANTENNA_B;
else
ant->tx = rt2x00dev->default_ant.tx;
}
ant->rx = rt2x00lib_config_antenna_check(ant->rx, def->rx);
ant->tx = rt2x00lib_config_antenna_check(ant->tx, def->tx);
/*
* Only reconfigure when something has changed.
*/
if (ant->rx == rt2x00dev->link.ant.active.rx &&
ant->tx == rt2x00dev->link.ant.active.tx)
if (ant->rx == active->rx && ant->tx == active->tx)
return;
/*
@ -154,7 +155,7 @@ void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
rt2x00lib_reset_link_tuner(rt2x00dev);
rt2x00_reset_link_ant_rssi(&rt2x00dev->link);
memcpy(&rt2x00dev->link.ant.active, ant, sizeof(*ant));
memcpy(active, ant, sizeof(*ant));
if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON_LINK);