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[PATCH v2] wl1271: Fix warning about unsupported RX rate

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While scanning, it is possible that beacon and probe response frames are
received on other band than configured to the driver. In rx status
handling this has caused "Unsupported RX rate from HW" warnings. This
patch changes the wl1271_rate_to_index function to take the band of the
received frame as a parameter instead of using value configuret to
wl->band.

Signed-off-by: Teemu Paasikivi <ext-teemu.3.paasikivi@xxxxxxxxx>
---
Changes v1 -> v2: Fixed patch to apply on wl12xx tree

 drivers/net/wireless/wl12xx/wl1271_main.c |    6 +++---
 drivers/net/wireless/wl12xx/wl1271_rx.c   |   10 +++++++++-
 drivers/net/wireless/wl12xx/wl1271_rx.h   |    2 +-
 drivers/net/wireless/wl12xx/wl1271_tx.c   |    2 +-
 drivers/net/wireless/wl12xx/wl1271_tx.h   |    2 +-
 5 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c
index 48a4b99..a225400 100644
--- a/drivers/net/wireless/wl12xx/wl1271_main.c
+++ b/drivers/net/wireless/wl12xx/wl1271_main.c
@@ -2281,18 +2281,18 @@ static const struct ieee80211_ops wl1271_ops = {
 };
 
 
-u8 wl1271_rate_to_idx(struct wl1271 *wl, int rate)
+u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band)
 {
 	u8 idx;
 
-	BUG_ON(wl->band >= sizeof(wl1271_band_rate_to_idx)/sizeof(u8 *));
+	BUG_ON(band >= sizeof(wl1271_band_rate_to_idx)/sizeof(u8 *));
 
 	if (unlikely(rate >= CONF_HW_RXTX_RATE_MAX)) {
 		wl1271_error("Illegal RX rate from HW: %d", rate);
 		return 0;
 	}
 
-	idx = wl1271_band_rate_to_idx[wl->band][rate];
+	idx = wl1271_band_rate_to_idx[band][rate];
 	if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
 		wl1271_error("Unsupported RX rate from HW: %d", rate);
 		return 0;
diff --git a/drivers/net/wireless/wl12xx/wl1271_rx.c b/drivers/net/wireless/wl12xx/wl1271_rx.c
index bea133b..282d286 100644
--- a/drivers/net/wireless/wl12xx/wl1271_rx.c
+++ b/drivers/net/wireless/wl12xx/wl1271_rx.c
@@ -48,10 +48,18 @@ static void wl1271_rx_status(struct wl1271 *wl,
 			     struct ieee80211_rx_status *status,
 			     u8 beacon)
 {
+	enum ieee80211_band desc_band;
+
 	memset(status, 0, sizeof(struct ieee80211_rx_status));
 
 	status->band = wl->band;
-	status->rate_idx = wl1271_rate_to_idx(wl, desc->rate);
+
+	if ((desc->flags & WL1271_RX_DESC_BAND_MASK) == WL1271_RX_DESC_BAND_BG)
+		desc_band = IEEE80211_BAND_2GHZ;
+	else
+		desc_band = IEEE80211_BAND_5GHZ;
+
+	status->rate_idx = wl1271_rate_to_idx(desc->rate, desc_band);
 
 	status->signal = desc->rssi;
 
diff --git a/drivers/net/wireless/wl12xx/wl1271_rx.h b/drivers/net/wireless/wl12xx/wl1271_rx.h
index 13a2323..6d41981 100644
--- a/drivers/net/wireless/wl12xx/wl1271_rx.h
+++ b/drivers/net/wireless/wl12xx/wl1271_rx.h
@@ -116,6 +116,6 @@ struct wl1271_rx_descriptor {
 } __packed;
 
 void wl1271_rx(struct wl1271 *wl, struct wl1271_fw_status *status);
-u8 wl1271_rate_to_idx(struct wl1271 *wl, int rate);
+u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band);
 
 #endif
diff --git a/drivers/net/wireless/wl12xx/wl1271_tx.c b/drivers/net/wireless/wl12xx/wl1271_tx.c
index e3dc13c..c97ba31 100644
--- a/drivers/net/wireless/wl12xx/wl1271_tx.c
+++ b/drivers/net/wireless/wl12xx/wl1271_tx.c
@@ -298,7 +298,7 @@ static void wl1271_tx_complete_packet(struct wl1271 *wl,
 	if (result->status == TX_SUCCESS) {
 		if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
 			info->flags |= IEEE80211_TX_STAT_ACK;
-		rate = wl1271_rate_to_idx(wl, result->rate_class_index);
+		rate = wl1271_rate_to_idx(result->rate_class_index, wl->band);
 		retries = result->ack_failures;
 	} else if (result->status == TX_RETRY_EXCEEDED) {
 		wl->stats.excessive_retries++;
diff --git a/drivers/net/wireless/wl12xx/wl1271_tx.h b/drivers/net/wireless/wl12xx/wl1271_tx.h
index d12a129..eff1260 100644
--- a/drivers/net/wireless/wl12xx/wl1271_tx.h
+++ b/drivers/net/wireless/wl12xx/wl1271_tx.h
@@ -143,7 +143,7 @@ void wl1271_tx_work(struct work_struct *work);
 void wl1271_tx_complete(struct wl1271 *wl);
 void wl1271_tx_reset(struct wl1271 *wl);
 void wl1271_tx_flush(struct wl1271 *wl);
-u8 wl1271_rate_to_idx(struct wl1271 *wl, int rate);
+u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band);
 u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set);
 
 #endif
-- 
1.7.1

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