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Ath5k: unify resets 

There were 3 code copy and pastes of reset. Unify the resets and place
in separate function.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Nick Kossifidis <mickflemm@gmail.com>
Cc: Luis R. Rodriguez <mcgrof@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jiri Slaby 2008-07-23 13:17:35 +02:00 committed by John W. Linville
parent b9740c2396
commit d7dc100374
1 changed files with 42 additions and 82 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

124
drivers/net/wireless/ath5k/base.c
View File

@ -162,7 +162,8 @@ static struct pci_driver ath5k_pci_driver = {
* Prototypes - MAC 802.11 stack related functions
*/
static int ath5k_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
static int ath5k_reset(struct ieee80211_hw *hw);
static int ath5k_reset(struct ath5k_softc *sc, bool stop, bool change_channel);
static int ath5k_reset_wake(struct ath5k_softc *sc);
static int ath5k_start(struct ieee80211_hw *hw);
static void ath5k_stop(struct ieee80211_hw *hw);
static int ath5k_add_interface(struct ieee80211_hw *hw,
@ -977,9 +978,6 @@ ath5k_getchannels(struct ieee80211_hw *hw)
static int
ath5k_chan_set(struct ath5k_softc *sc, struct ieee80211_channel *chan)
{
struct ath5k_hw *ah = sc->ah;
int ret;
ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "(%u MHz) -> (%u MHz)\n",
sc->curchan->center_freq, chan->center_freq);
@ -995,41 +993,7 @@ ath5k_chan_set(struct ath5k_softc *sc, struct ieee80211_channel *chan)
* hardware at the new frequency, and then re-enable
* the relevant bits of the h/w.
*/
ath5k_hw_set_intr(ah, 0); /* disable interrupts */
ath5k_txq_cleanup(sc); /* clear pending tx frames */
ath5k_rx_stop(sc); /* turn off frame recv */
ret = ath5k_hw_reset(ah, sc->opmode, sc->curchan, true);
if (ret) {
ATH5K_ERR(sc, "%s: unable to reset channel "
"(%u Mhz)\n", __func__, chan->center_freq);
return ret;
}
ath5k_hw_set_txpower_limit(sc->ah, 0);
/*
* Re-enable rx framework.
*/
ret = ath5k_rx_start(sc);
if (ret) {
ATH5K_ERR(sc, "%s: unable to restart recv logic\n",
__func__);
return ret;
}
/*
* Change channels and update the h/w rate map
* if we're switching; e.g. 11a to 11b/g.
*
* XXX needed?
*/
/* ath5k_chan_change(sc, chan); */
ath5k_beacon_config(sc);
/*
* Re-enable interrupts.
*/
ath5k_hw_set_intr(ah, sc->imask);
return ath5k_reset(sc, true, true);
}
return 0;
@ -2217,36 +2181,13 @@ ath5k_init(struct ath5k_softc *sc)
*/
sc->curchan = sc->hw->conf.channel;
sc->curband = &sc->sbands[sc->curchan->band];
ret = ath5k_hw_reset(sc->ah, sc->opmode, sc->curchan, false);
if (ret) {
ATH5K_ERR(sc, "unable to reset hardware: %d\n", ret);
goto done;
}
/*
* This is needed only to setup initial state
* but it's best done after a reset.
*/
ath5k_hw_set_txpower_limit(sc->ah, 0);
/*
* Setup the hardware after reset: the key cache
* is filled as needed and the receive engine is
* set going. Frame transmit is handled entirely
* in the frame output path; there's nothing to do
* here except setup the interrupt mask.
*/
ret = ath5k_rx_start(sc);
if (ret)
goto done;
/*
* Enable interrupts.
*/
sc->imask = AR5K_INT_RX | AR5K_INT_TX | AR5K_INT_RXEOL |
AR5K_INT_RXORN | AR5K_INT_FATAL | AR5K_INT_GLOBAL |
AR5K_INT_MIB;
ret = ath5k_reset(sc, false, false);
if (ret)
goto done;
ath5k_hw_set_intr(sc->ah, sc->imask);
/* Set ack to be sent at low bit-rates */
ath5k_hw_set_ack_bitrate_high(sc->ah, false);
@ -2446,7 +2387,7 @@ ath5k_tasklet_reset(unsigned long data)
{
struct ath5k_softc *sc = (void *)data;
ath5k_reset(sc->hw);
ath5k_reset_wake(sc);
}
/*
@ -2469,7 +2410,7 @@ ath5k_calibrate(unsigned long data)
* to load new gain values.
*/
ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "calibration, resetting\n");
ath5k_reset(sc->hw);
ath5k_reset_wake(sc);
}
if (ath5k_hw_phy_calibrate(ah, sc->curchan))
ATH5K_ERR(sc, "calibration of channel %u failed\n",
@ -2670,48 +2611,67 @@ ath5k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
}
static int
ath5k_reset(struct ieee80211_hw *hw)
ath5k_reset(struct ath5k_softc *sc, bool stop, bool change_channel)
{
struct ath5k_softc *sc = hw->priv;
struct ath5k_hw *ah = sc->ah;
int ret;
ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "resetting\n");
ath5k_hw_set_intr(ah, 0);
ath5k_txq_cleanup(sc);
ath5k_rx_stop(sc);
if (stop) {
ath5k_hw_set_intr(ah, 0);
ath5k_txq_cleanup(sc);
ath5k_rx_stop(sc);
}
ret = ath5k_hw_reset(ah, sc->opmode, sc->curchan, true);
if (unlikely(ret)) {
if (ret) {
ATH5K_ERR(sc, "can't reset hardware (%d)\n", ret);
goto err;
}
/*
* This is needed only to setup initial state
* but it's best done after a reset.
*/
ath5k_hw_set_txpower_limit(sc->ah, 0);
ret = ath5k_rx_start(sc);
if (unlikely(ret)) {
if (ret) {
ATH5K_ERR(sc, "can't start recv logic\n");
goto err;
}
/*
* We may be doing a reset in response to an ioctl
* that changes the channel so update any state that
* might change as a result.
* Change channels and update the h/w rate map if we're switching;
* e.g. 11a to 11b/g.
*
* We may be doing a reset in response to an ioctl that changes the
* channel so update any state that might change as a result.
*
* XXX needed?
*/
/* ath5k_chan_change(sc, c); */
ath5k_beacon_config(sc);
/* intrs are started by ath5k_beacon_config */
ieee80211_wake_queues(hw);
ath5k_beacon_config(sc);
/* intrs are enabled by ath5k_beacon_config */
return 0;
err:
return ret;
}
static int
ath5k_reset_wake(struct ath5k_softc *sc)
{
int ret;
ret = ath5k_reset(sc, true, true);
if (!ret)
ieee80211_wake_queues(sc->hw);
return ret;
}
static int ath5k_start(struct ieee80211_hw *hw)
{
return ath5k_init(hw->priv);
@ -2820,7 +2780,7 @@ ath5k_config_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
mutex_unlock(&sc->lock);
return ath5k_reset(hw);
return ath5k_reset_wake(sc);
unlock:
mutex_unlock(&sc->lock);
return ret;