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authorReinette Chatre <reinette.chatre@intel.com>2010-04-30 15:13:00 -0700
committerReinette Chatre <reinette.chatre@intel.com>2010-04-30 15:13:00 -0700
commitad41ee3a45c7de33cfa0057f4a12362ba1f1af32 (patch)
tree84ad26649f4fce8a3816351ab1d511cf6c6f0bf1 /drivers/net/wireless
parent49b5c7f473f1bbcb30275dcaee2c06dfb8ec2279 (diff)
parent96ff56419504ac6a610ff1af42330e0423242e16 (diff)
Merge branch 'wireless-2.6' into wireless-next-2.6
Patch "iwlwifi: work around passive scan issue" was merged into wireless-2.6, but touched a lot of code since modified (and moved) in wireless-next-2.6. This caused some conflicts. Conflicts: drivers/net/wireless/iwlwifi/iwl-scan.c Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Diffstat (limited to 'drivers/net/wireless')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-agn-lib.c23
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-commands.h4
-rw-r--r--drivers/net/wireless/iwlwifi/iwl3945-base.c3
-rw-r--r--drivers/net/wireless/p54/p54pci.c2
4 files changed, 24 insertions, 8 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index 4bd0aecc771..a2734742596 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -1395,16 +1395,29 @@ void iwlagn_request_scan(struct iwl_priv *priv)
rate = IWL_RATE_1M_PLCP;
rate_flags = RATE_MCS_CCK_MSK;
}
- scan->good_CRC_th = 0;
+ scan->good_CRC_th = IWL_GOOD_CRC_TH_DISABLED;
break;
case IEEE80211_BAND_5GHZ:
rate = IWL_RATE_6M_PLCP;
/*
- * If active scaning is requested but a certain channel
- * is marked passive, we can do active scanning if we
- * detect transmissions.
+ * If active scanning is requested but a certain channel is
+ * marked passive, we can do active scanning if we detect
+ * transmissions.
+ *
+ * There is an issue with some firmware versions that triggers
+ * a sysassert on a "good CRC threshold" of zero (== disabled),
+ * on a radar channel even though this means that we should NOT
+ * send probes.
+ *
+ * The "good CRC threshold" is the number of frames that we
+ * need to receive during our dwell time on a channel before
+ * sending out probes -- setting this to a huge value will
+ * mean we never reach it, but at the same time work around
+ * the aforementioned issue. Thus use IWL_GOOD_CRC_TH_NEVER
+ * here instead of IWL_GOOD_CRC_TH_DISABLED.
*/
- scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
+ scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
+ IWL_GOOD_CRC_TH_NEVER;
break;
default:
IWL_WARN(priv, "Invalid scan band count\n");
diff --git a/drivers/net/wireless/iwlwifi/iwl-commands.h b/drivers/net/wireless/iwlwifi/iwl-commands.h
index 67c723cc32d..0086019b7a1 100644
--- a/drivers/net/wireless/iwlwifi/iwl-commands.h
+++ b/drivers/net/wireless/iwlwifi/iwl-commands.h
@@ -2663,7 +2663,9 @@ struct iwl_ssid_ie {
#define PROBE_OPTION_MAX_3945 4
#define PROBE_OPTION_MAX 20
#define TX_CMD_LIFE_TIME_INFINITE cpu_to_le32(0xFFFFFFFF)
-#define IWL_GOOD_CRC_TH cpu_to_le16(1)
+#define IWL_GOOD_CRC_TH_DISABLED 0
+#define IWL_GOOD_CRC_TH_DEFAULT cpu_to_le16(1)
+#define IWL_GOOD_CRC_TH_NEVER cpu_to_le16(0xffff)
#define IWL_MAX_SCAN_SIZE 1024
#define IWL_MAX_CMD_SIZE 4096
#define IWL_MAX_PROBE_REQUEST 200
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index e7263ed693c..789480b89a6 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -2938,7 +2938,8 @@ void iwl3945_request_scan(struct iwl_priv *priv)
* is marked passive, we can do active scanning if we
* detect transmissions.
*/
- scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
+ scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
+ IWL_GOOD_CRC_TH_DISABLED;
band = IEEE80211_BAND_5GHZ;
break;
default:
diff --git a/drivers/net/wireless/p54/p54pci.c b/drivers/net/wireless/p54/p54pci.c
index fc67888db0c..d7b9f48b3d3 100644
--- a/drivers/net/wireless/p54/p54pci.c
+++ b/drivers/net/wireless/p54/p54pci.c
@@ -245,7 +245,7 @@ static void p54p_check_tx_ring(struct ieee80211_hw *dev, u32 *index,
u32 idx, i;
i = (*index) % ring_limit;
- (*index) = idx = le32_to_cpu(ring_control->device_idx[1]);
+ (*index) = idx = le32_to_cpu(ring_control->device_idx[ring_index]);
idx %= ring_limit;
while (i != idx) {