1 files changed, 52 insertions, 28 deletions

diff --git a/drivers/net/wireless/wl12xx/rx.c b/drivers/net/wireless/wl12xx/rx.c
index 919b59f0030..70091035e01 100644
--- a/drivers/net/wireless/wl12xx/rx.c
+++ b/drivers/net/wireless/wl12xx/rx.c
@@ -48,18 +48,14 @@ 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;
-
 	if ((desc->flags & WL1271_RX_DESC_BAND_MASK) == WL1271_RX_DESC_BAND_BG)
-		desc_band = IEEE80211_BAND_2GHZ;
+		status->band = IEEE80211_BAND_2GHZ;
 	else
-		desc_band = IEEE80211_BAND_5GHZ;
+		status->band = IEEE80211_BAND_5GHZ;
 
-	status->rate_idx = wl1271_rate_to_idx(desc->rate, desc_band);
+	status->rate_idx = wl1271_rate_to_idx(desc->rate, status->band);
 
 #ifdef CONFIG_WL12XX_HT
 	/* 11n support */
@@ -76,15 +72,19 @@ static void wl1271_rx_status(struct wl1271 *wl,
 	 */
 	wl->noise = desc->rssi - (desc->snr >> 1);
 
-	status->freq = ieee80211_channel_to_frequency(desc->channel, desc_band);
+	status->freq = ieee80211_channel_to_frequency(desc->channel,
+						      status->band);
 
 	if (desc->flags & WL1271_RX_DESC_ENCRYPT_MASK) {
-		status->flag |= RX_FLAG_IV_STRIPPED | RX_FLAG_MMIC_STRIPPED;
+		u8 desc_err_code = desc->status & WL1271_RX_DESC_STATUS_MASK;
+
+		status->flag |= RX_FLAG_IV_STRIPPED | RX_FLAG_MMIC_STRIPPED |
+				RX_FLAG_DECRYPTED;
 
-		if (likely(!(desc->status & WL1271_RX_DESC_DECRYPT_FAIL)))
-			status->flag |= RX_FLAG_DECRYPTED;
-		if (unlikely(desc->status & WL1271_RX_DESC_MIC_FAIL))
+		if (unlikely(desc_err_code == WL1271_RX_DESC_MIC_FAIL)) {
 			status->flag |= RX_FLAG_MMIC_ERROR;
+			wl1271_warning("Michael MIC error");
+		}
 	}
 }
 
@@ -103,6 +103,25 @@ static int wl1271_rx_handle_data(struct wl1271 *wl, u8 *data, u32 length)
 	if (unlikely(wl->state == WL1271_STATE_PLT))
 		return -EINVAL;
 
+	/* the data read starts with the descriptor */
+	desc = (struct wl1271_rx_descriptor *) data;
+
+	switch (desc->status & WL1271_RX_DESC_STATUS_MASK) {
+	/* discard corrupted packets */
+	case WL1271_RX_DESC_DRIVER_RX_Q_FAIL:
+	case WL1271_RX_DESC_DECRYPT_FAIL:
+		wl1271_warning("corrupted packet in RX with status: 0x%x",
+			       desc->status & WL1271_RX_DESC_STATUS_MASK);
+		return -EINVAL;
+	case WL1271_RX_DESC_SUCCESS:
+	case WL1271_RX_DESC_MIC_FAIL:
+		break;
+	default:
+		wl1271_error("invalid RX descriptor status: 0x%x",
+			     desc->status & WL1271_RX_DESC_STATUS_MASK);
+		return -EINVAL;
+	}
+
 	skb = __dev_alloc_skb(length, GFP_KERNEL);
 	if (!skb) {
 		wl1271_error("Couldn't allocate RX frame");
@@ -112,9 +131,6 @@ static int wl1271_rx_handle_data(struct wl1271 *wl, u8 *data, u32 length)
 	buf = skb_put(skb, length);
 	memcpy(buf, data, length);
 
-	/* the data read starts with the descriptor */
-	desc = (struct wl1271_rx_descriptor *) buf;
-
 	/* now we pull the descriptor out of the buffer */
 	skb_pull(skb, sizeof(*desc));
 
@@ -124,7 +140,8 @@ static int wl1271_rx_handle_data(struct wl1271 *wl, u8 *data, u32 length)
 
 	wl1271_rx_status(wl, desc, IEEE80211_SKB_RXCB(skb), beacon);
 
-	wl1271_debug(DEBUG_RX, "rx skb 0x%p: %d B %s", skb, skb->len,
+	wl1271_debug(DEBUG_RX, "rx skb 0x%p: %d B %s", skb,
+		     skb->len - desc->pad_len,
 		     beacon ? "beacon" : "");
 
 	skb_trim(skb, skb->len - desc->pad_len);
@@ -163,18 +180,25 @@ void wl1271_rx(struct wl1271 *wl, struct wl1271_fw_common_status *status)
 			break;
 		}
 
-		/*
-		 * Choose the block we want to read
-		 * For aggregated packets, only the first memory block should
-		 * be retrieved. The FW takes care of the rest.
-		 */
-		mem_block = wl1271_rx_get_mem_block(status, drv_rx_counter);
-		wl->rx_mem_pool_addr.addr = (mem_block << 8) +
-			le32_to_cpu(wl_mem_map->packet_memory_pool_start);
-		wl->rx_mem_pool_addr.addr_extra =
-			wl->rx_mem_pool_addr.addr + 4;
-		wl1271_write(wl, WL1271_SLV_REG_DATA, &wl->rx_mem_pool_addr,
-				sizeof(wl->rx_mem_pool_addr), false);
+		if (wl->chip.id != CHIP_ID_1283_PG20) {
+			/*
+			 * Choose the block we want to read
+			 * For aggregated packets, only the first memory block
+			 * should be retrieved. The FW takes care of the rest.
+			 */
+			mem_block = wl1271_rx_get_mem_block(status,
+							    drv_rx_counter);
+
+			wl->rx_mem_pool_addr.addr = (mem_block << 8) +
+			   le32_to_cpu(wl_mem_map->packet_memory_pool_start);
+
+			wl->rx_mem_pool_addr.addr_extra =
+				wl->rx_mem_pool_addr.addr + 4;
+
+			wl1271_write(wl, WL1271_SLV_REG_DATA,
+				     &wl->rx_mem_pool_addr,
+				     sizeof(wl->rx_mem_pool_addr), false);
+		}
 
 		/* Read all available packets at once */
 		wl1271_read(wl, WL1271_SLV_MEM_DATA, wl->aggr_buf,