wcn6740: Update cnss/mhi/qmi/qrtr drivers

Migrate wlan codes to PostCS release

Bug: 245009352
Test: Regression Test
Change-Id: Icb90ab318ced3f028a19d6e329d509a23c3774a6

2 files changed, 13 insertions, 0 deletions

diff --git a/mhi/core/internal.h b/mhi/core/internal.h
index b53c8e3..aa5a269 100644
--- a/mhi/core/internal.h
+++ b/mhi/core/internal.h
@@ -677,6 +677,7 @@ void mhi_ring_cmd_db(struct mhi_controller *mhi_cntrl, struct mhi_cmd *mhi_cmd);
 void mhi_ring_chan_db(struct mhi_controller *mhi_cntrl,
 		      struct mhi_chan *mhi_chan);
 void *mhi_to_virtual(struct mhi_ring *ring, dma_addr_t addr);
+dma_addr_t mhi_to_physical(struct mhi_ring *ring, void *addr);
 
 /* Initialization methods */
 int mhi_init_mmio(struct mhi_controller *mhi_cntrl);
diff --git a/mhi/core/misc.c b/mhi/core/misc.c
index fffef3e..a04be2d 100644
--- a/mhi/core/misc.c
+++ b/mhi/core/misc.c
@@ -1263,6 +1263,18 @@ int mhi_process_misc_bw_ev_ring(struct mhi_controller *mhi_cntrl,
 	spin_lock_bh(&mhi_event->lock);
 	dev_rp = mhi_to_virtual(ev_ring, er_ctxt->rp);
 
+	/**
+	 * Check the ev ring local pointer is same as ctxt pointer
+	 * if both are same do not process ev ring.
+	 */
+	if (ev_ring->rp == dev_rp) {
+		MHI_VERB("Ignore received BW event:0x%llx ev_ring RP:0x%llx\n",
+			 dev_rp->ptr,
+			 (u64)mhi_to_physical(ev_ring, ev_ring->rp));
+		spin_unlock_bh(&mhi_event->lock);
+		return 0;
+	}
+
 	/* if rp points to base, we need to wrap it around */
 	if (dev_rp == ev_ring->base)
 		dev_rp = ev_ring->base + ev_ring->len;