diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2011-01-04 16:22:00 -0800 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-01-21 15:32:20 -0500 |
| commit | 7194207ceea7a54c846e0865d2459f4887fe1e0d (patch) | |
| tree | eff27d7461dc336187a3765fd79e0daba7d8fc49 /drivers/net/wireless/iwlwifi/iwl-agn.c | |
| parent | f945f1087f1fe20f9c626daa175b677736fc614d (diff) | |
| download | lwn-7194207ceea7a54c846e0865d2459f4887fe1e0d.tar.gz lwn-7194207ceea7a54c846e0865d2459f4887fe1e0d.zip | |
iwlagn: add support for waiting for notifications
In order to implement waiting for notifications,
add a structure that captures the information,
and a list of such structures that will be
traversed when a command is received from the
ucode.
Use sparse checking to make sure calls to the
prepare/wait/cancel functions are always nested
correctly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-agn.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index 624f174f8664..97657d04aa68 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -910,6 +910,27 @@ static void iwl_rx_handle(struct iwl_priv *priv) (pkt->hdr.cmd != STATISTICS_NOTIFICATION) && (pkt->hdr.cmd != REPLY_TX); + /* + * Do the notification wait before RX handlers so + * even if the RX handler consumes the RXB we have + * access to it in the notification wait entry. + */ + if (!list_empty(&priv->_agn.notif_waits)) { + struct iwl_notification_wait *w; + + spin_lock(&priv->_agn.notif_wait_lock); + list_for_each_entry(w, &priv->_agn.notif_waits, list) { + if (w->cmd == pkt->hdr.cmd) { + w->triggered = true; + if (w->fn) + w->fn(priv, pkt); + } + } + spin_unlock(&priv->_agn.notif_wait_lock); + + wake_up_all(&priv->_agn.notif_waitq); + } + /* Based on type of command response or notification, * handle those that need handling via function in * rx_handlers table. See iwl_setup_rx_handlers() */ |