diff options
author | Paul Mundt <lethal@linux-sh.org> | 2011-03-17 07:44:08 (GMT) |
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committer | Paul Mundt <lethal@linux-sh.org> | 2011-03-17 07:44:08 (GMT) |
commit | 1d2a1959fe534279cf37aba20b08c24c20840e52 (patch) | |
tree | 67c0b9aa7fe22a44bf0b4af88947799203eb8f67 /drivers/net/wireless/p54/main.c | |
parent | 5a79ce76e9bb8f4b2cd8106ee36d15ee05013bcf (diff) | |
parent | 054cfaacf88865bff1dd58d305443d5d6c068a08 (diff) | |
download | linux-1d2a1959fe534279cf37aba20b08c24c20840e52.tar.xz |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into sh-latest
Diffstat (limited to 'drivers/net/wireless/p54/main.c')
-rw-r--r-- | drivers/net/wireless/p54/main.c | 61 |
1 files changed, 59 insertions, 2 deletions
diff --git a/drivers/net/wireless/p54/main.c b/drivers/net/wireless/p54/main.c index 622d27b6..356e6bb 100644 --- a/drivers/net/wireless/p54/main.c +++ b/drivers/net/wireless/p54/main.c @@ -157,7 +157,7 @@ static int p54_beacon_update(struct p54_common *priv, * to cancel the old beacon template by hand, instead the firmware * will release the previous one through the feedback mechanism. */ - WARN_ON(p54_tx_80211(priv->hw, beacon)); + p54_tx_80211(priv->hw, beacon); priv->tsf_high32 = 0; priv->tsf_low32 = 0; @@ -524,6 +524,59 @@ static int p54_get_survey(struct ieee80211_hw *dev, int idx, return 0; } +static unsigned int p54_flush_count(struct p54_common *priv) +{ + unsigned int total = 0, i; + + BUILD_BUG_ON(P54_QUEUE_NUM > ARRAY_SIZE(priv->tx_stats)); + + /* + * Because the firmware has the sole control over any frames + * in the P54_QUEUE_BEACON or P54_QUEUE_SCAN queues, they + * don't really count as pending or active. + */ + for (i = P54_QUEUE_MGMT; i < P54_QUEUE_NUM; i++) + total += priv->tx_stats[i].len; + return total; +} + +static void p54_flush(struct ieee80211_hw *dev, bool drop) +{ + struct p54_common *priv = dev->priv; + unsigned int total, i; + + /* + * Currently, it wouldn't really matter if we wait for one second + * or 15 minutes. But once someone gets around and completes the + * TODOs [ancel stuck frames / reset device] in p54_work, it will + * suddenly make sense to wait that long. + */ + i = P54_STATISTICS_UPDATE * 2 / 20; + + /* + * In this case no locking is required because as we speak the + * queues have already been stopped and no new frames can sneak + * up from behind. + */ + while ((total = p54_flush_count(priv) && i--)) { + /* waste time */ + msleep(20); + } + + WARN(total, "tx flush timeout, unresponsive firmware"); +} + +static void p54_set_coverage_class(struct ieee80211_hw *dev, u8 coverage_class) +{ + struct p54_common *priv = dev->priv; + + mutex_lock(&priv->conf_mutex); + /* support all coverage class values as in 802.11-2007 Table 7-27 */ + priv->coverage_class = clamp_t(u8, coverage_class, 0, 31); + p54_set_edcf(priv); + mutex_unlock(&priv->conf_mutex); +} + static const struct ieee80211_ops p54_ops = { .tx = p54_tx_80211, .start = p54_start, @@ -536,11 +589,13 @@ static const struct ieee80211_ops p54_ops = { .sta_remove = p54_sta_add_remove, .set_key = p54_set_key, .config = p54_config, + .flush = p54_flush, .bss_info_changed = p54_bss_info_changed, .configure_filter = p54_configure_filter, .conf_tx = p54_conf_tx, .get_stats = p54_get_stats, .get_survey = p54_get_survey, + .set_coverage_class = p54_set_coverage_class, }; struct ieee80211_hw *p54_init_common(size_t priv_data_len) @@ -611,7 +666,7 @@ EXPORT_SYMBOL_GPL(p54_init_common); int p54_register_common(struct ieee80211_hw *dev, struct device *pdev) { - struct p54_common *priv = dev->priv; + struct p54_common __maybe_unused *priv = dev->priv; int err; err = ieee80211_register_hw(dev); @@ -642,10 +697,12 @@ void p54_free_common(struct ieee80211_hw *dev) kfree(priv->iq_autocal); kfree(priv->output_limit); kfree(priv->curve_data); + kfree(priv->rssi_db); kfree(priv->used_rxkeys); priv->iq_autocal = NULL; priv->output_limit = NULL; priv->curve_data = NULL; + priv->rssi_db = NULL; priv->used_rxkeys = NULL; ieee80211_free_hw(dev); } |