wcn36xx: only handle packets when ED or DONE bit is set

On RX and TX interrupts, check for the WCN36XX_CH_STAT_INT_ED_MASK or
WCN36XX_CH_STAT_INT_DONE_MASK in the interrupt reason register, and
only handle packets when it is set. This way, reap_tx_dxes() is only
invoked when needed.

This brings the dequeing logic in line with what the prima downstream
driver is doing.

While at it, also log the interrupt reason.

Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

1 files changed, 16 insertions, 4 deletions

diff --git a/drivers/net/wireless/ath/wcn36xx/dxe.c b/drivers/net/wireless/ath/wcn36xx/dxe.c
index d11c9c536627..8c64e05ca3b7 100644
--- a/drivers/net/wireless/ath/wcn36xx/dxe.c
+++ b/drivers/net/wireless/ath/wcn36xx/dxe.c
@@ -430,8 +430,12 @@ static irqreturn_t wcn36xx_irq_tx_complete(int irq, void *dev)
                                                    WCN36XX_INT_MASK_CHAN_TX_H);
                 }
 
-                wcn36xx_dbg(WCN36XX_DBG_DXE, "dxe tx ready high\n");
-                reap_tx_dxes(wcn, &wcn->dxe_tx_h_ch);
+                wcn36xx_dbg(WCN36XX_DBG_DXE, "dxe tx ready high, reason %08x\n",
+                            int_reason);
+
+                if (int_reason & (WCN36XX_CH_STAT_INT_DONE_MASK |
+                                  WCN36XX_CH_STAT_INT_ED_MASK))
+                        reap_tx_dxes(wcn, &wcn->dxe_tx_h_ch);
         }
 
         if (int_src & WCN36XX_INT_MASK_CHAN_TX_L) {
@@ -465,8 +469,12 @@ static irqreturn_t wcn36xx_irq_tx_complete(int irq, void *dev)
                                                    WCN36XX_INT_MASK_CHAN_TX_L);
                 }
 
-                wcn36xx_dbg(WCN36XX_DBG_DXE, "dxe tx ready low\n");
-                reap_tx_dxes(wcn, &wcn->dxe_tx_l_ch);
+                wcn36xx_dbg(WCN36XX_DBG_DXE, "dxe tx ready low, reason %08x\n",
+                            int_reason);
+
+                if (int_reason & (WCN36XX_CH_STAT_INT_DONE_MASK |
+                                  WCN36XX_CH_STAT_INT_ED_MASK))
+                        reap_tx_dxes(wcn, &wcn->dxe_tx_l_ch);
         }
 
         return IRQ_HANDLED;
@@ -545,6 +553,10 @@ static int wcn36xx_rx_handle_packets(struct wcn36xx *wcn,
                                            WCN36XX_DXE_0_INT_ED_CLR,
                                            int_mask);
 
+        if (!(int_reason & (WCN36XX_CH_STAT_INT_DONE_MASK |
+                            WCN36XX_CH_STAT_INT_ED_MASK)))
+                return 0;
+
         spin_lock(&ch->lock);
 
         ctl = ch->head_blk_ctl;