iwlwifi: improve scanning band selection management
This patch modifies the band selection management when scanning, so
bands are now scanned according to HW band support.
Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 13925b6..b1b3c52 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -2227,7 +2227,10 @@
}
IWL_DEBUG_INFO("Starting scan...\n");
- priv->scan_bands = 2;
+ if (priv->cfg->sku & IWL_SKU_G)
+ priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
+ if (priv->cfg->sku & IWL_SKU_A)
+ priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
set_bit(STATUS_SCANNING, &priv->status);
priv->scan_start = jiffies;
priv->scan_pass_start = priv->scan_start;
@@ -3352,13 +3355,18 @@
cancel_delayed_work(&priv->scan_check);
IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
- (priv->scan_bands == 2) ? "2.4" : "5.2",
+ (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
+ "2.4" : "5.2",
jiffies_to_msecs(elapsed_jiffies
(priv->scan_pass_start, jiffies)));
- /* Remove this scanned band from the list
- * of pending bands to scan */
- priv->scan_bands--;
+ /* Remove this scanned band from the list of pending
+ * bands to scan, band G precedes A in order of scanning
+ * as seen in iwl3945_bg_request_scan */
+ if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
+ priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
+ else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ))
+ priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
/* If a request to abort was given, or the scan did not succeed
* then we reset the scan state machine and terminate,
@@ -4972,7 +4980,7 @@
ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
if (!is_channel_valid(ch_info)) {
- IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
+ IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
scan_ch->channel);
continue;
}
@@ -6315,21 +6323,16 @@
/* flags + rate selection */
- switch (priv->scan_bands) {
- case 2:
+ if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
scan->good_CRC_th = 0;
band = IEEE80211_BAND_2GHZ;
- break;
-
- case 1:
+ } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
scan->good_CRC_th = IWL_GOOD_CRC_TH;
band = IEEE80211_BAND_5GHZ;
- break;
-
- default:
+ } else {
IWL_WARNING("Invalid scan band count\n");
goto done;
}
@@ -6770,7 +6773,7 @@
ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
conf->channel->hw_value);
if (!is_channel_valid(ch_info)) {
- IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
+ IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
conf->channel->hw_value, conf->channel->band);
IWL_DEBUG_MAC80211("leave - invalid channel\n");
spin_unlock_irqrestore(&priv->lock, flags);