wifi: brcmfmac: Do not service msgbuf IRQs until ready in MSI mode

This is the counterpart to b50255c. In MSI mode we can still get MSIs
even with IRQs disabled, so add an explicit gate for it.

Signed-off-by: Hector Martin <marcan@marcan.st>

Author: marcan

drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c

@@ -408,6 +408,7 @@ struct brcmf_pciedev_info {
 	wait_queue_head_t mbdata_resp_wait;
 	bool mbdata_completed;
 	bool irq_allocated;
+	bool irq_ready;
 	bool have_msi;
 	bool wowl_enabled;
 	u8 dma_idx_sz;
@@ -991,6 +992,8 @@ static void brcmf_pcie_bus_console_read(struct brcmf_pciedev_info *devinfo,
 static void brcmf_pcie_intr_disable(struct brcmf_pciedev_info *devinfo)
 {
 	brcmf_pcie_write_reg32(devinfo, devinfo->reginfo->mailboxmask, 0);
+
+	devinfo->irq_ready = false;
 }
 
 
@@ -999,6 +1002,8 @@ static void brcmf_pcie_intr_enable(struct brcmf_pciedev_info *devinfo)
 	brcmf_pcie_write_reg32(devinfo, devinfo->reginfo->mailboxmask,
 			       devinfo->reginfo->int_d2h_db |
 			       devinfo->reginfo->int_fn0);
+
+	devinfo->irq_ready = true;
 }
 
 static void brcmf_pcie_hostready(struct brcmf_pciedev_info *devinfo)
@@ -1044,7 +1049,7 @@ static irqreturn_t brcmf_pcie_isr_thread(int irq, void *arg)
 			brcmf_pcie_poll_mb_data(devinfo);
 	}
 	if (devinfo->have_msi || status & devinfo->reginfo->int_d2h_db) {
-		if (devinfo->state == BRCMFMAC_PCIE_STATE_UP)
+		if (devinfo->state == BRCMFMAC_PCIE_STATE_UP && devinfo->irq_ready)
 			brcmf_proto_msgbuf_rx_trigger(&devinfo->pdev->dev);
 	}