[PATCH 07/11] ath10k_sdio: fix rssi indication

[silexcommon at gmail.com]

From: Alagu Sankar <alagusankar at silex-india.com>

Receive descriptor of sdio device does not include the rssi. notify
mac80211 accordingly. Without the fix, the rssi value indicated by
iw changes between the actual value and -95.

Signed-off-by: Alagu Sankar <alagusankar at silex-india.com>
---
 drivers/net/wireless/ath/ath10k/htt_rx.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c
index f025363..21adcad 100644
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -1646,9 +1646,16 @@ static bool ath10k_htt_rx_proc_rx_ind_hl(struct ath10k_htt *htt,
 	hdr = (struct ieee80211_hdr *)skb->data;
 	rx_status = IEEE80211_SKB_RXCB(skb);
 	rx_status->chains |= BIT(0);
-	rx_status->signal = ATH10K_DEFAULT_NOISE_FLOOR +
-			    rx->ppdu.combined_rssi;
-	rx_status->flag &= ~RX_FLAG_NO_SIGNAL_VAL;
+
+	if (ar->hif.bus == ATH10K_BUS_SDIO) {
+		/* SDIO firmware does not provide signal */
+		rx_status->signal = 0;
+		rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL;
+	} else {
+		rx_status->signal = ATH10K_DEFAULT_NOISE_FLOOR +
+			rx->ppdu.combined_rssi;
+		rx_status->flag &= ~RX_FLAG_NO_SIGNAL_VAL;
+	}
 
 	spin_lock_bh(&ar->data_lock);
 	ch = ar->scan_channel;
-- 
1.9.1