3 files changed, 11 insertions, 8 deletions

diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index a7716202a8dd..450adaca68ee 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -2533,7 +2533,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
 	if (xhci_add_interrupter(xhci, ir, 0))
 		goto fail;
 
-	xhci->isoc_bei_interval = AVOID_BEI_INTERVAL_MAX;
+	ir->isoc_bei_interval = AVOID_BEI_INTERVAL_MAX;
 
 	/*
 	 * XXX: Might need to set the Interrupter Moderation Register to
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 3d9ec78bfb9f..49f10dc25516 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -3153,8 +3153,8 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd)
 		event_ring_deq = ir->event_ring->dequeue;
 
 		/* ring is half-full, force isoc trbs to interrupt more often */
-		if (xhci->isoc_bei_interval > AVOID_BEI_INTERVAL_MIN)
-			xhci->isoc_bei_interval = xhci->isoc_bei_interval / 2;
+		if (ir->isoc_bei_interval > AVOID_BEI_INTERVAL_MIN)
+			ir->isoc_bei_interval = ir->isoc_bei_interval / 2;
 
 		event_loop = 0;
 	}
@@ -4022,7 +4022,8 @@ static int xhci_get_isoc_frame_id(struct xhci_hcd *xhci,
 }
 
 /* Check if we should generate event interrupt for a TD in an isoc URB */
-static bool trb_block_event_intr(struct xhci_hcd *xhci, int num_tds, int i)
+static bool trb_block_event_intr(struct xhci_hcd *xhci, int num_tds, int i,
+				 struct xhci_interrupter *ir)
 {
 	if (xhci->hci_version < 0x100)
 		return false;
@@ -4033,8 +4034,8 @@ static bool trb_block_event_intr(struct xhci_hcd *xhci, int num_tds, int i)
 	 * If AVOID_BEI is set the host handles full event rings poorly,
 	 * generate an event at least every 8th TD to clear the event ring
 	 */
-	if (i && xhci->quirks & XHCI_AVOID_BEI)
-		return !!(i % xhci->isoc_bei_interval);
+	if (i && ir->isoc_bei_interval && xhci->quirks & XHCI_AVOID_BEI)
+		return !!(i % ir->isoc_bei_interval);
 
 	return true;
 }
@@ -4043,6 +4044,7 @@ static bool trb_block_event_intr(struct xhci_hcd *xhci, int num_tds, int i)
 static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		struct urb *urb, int slot_id, unsigned int ep_index)
 {
+	struct xhci_interrupter *ir;
 	struct xhci_ring *ep_ring;
 	struct urb_priv *urb_priv;
 	struct xhci_td *td;
@@ -4060,6 +4062,7 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 
 	xep = &xhci->devs[slot_id]->eps[ep_index];
 	ep_ring = xhci->devs[slot_id]->eps[ep_index].ring;
+	ir = xhci->interrupters[0];
 
 	num_tds = urb->number_of_packets;
 	if (num_tds < 1) {
@@ -4147,7 +4150,7 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 				td->last_trb = ep_ring->enqueue;
 				td->last_trb_seg = ep_ring->enq_seg;
 				field |= TRB_IOC;
-				if (trb_block_event_intr(xhci, num_tds, i))
+				if (trb_block_event_intr(xhci, num_tds, i, ir))
 					field |= TRB_BEI;
 			}
 			/* Calculate TRB length */
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 36c3ba64da51..6e09b9130fae 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1433,6 +1433,7 @@ struct xhci_interrupter {
 	struct xhci_intr_reg __iomem *ir_set;
 	unsigned int		intr_num;
 	bool			ip_autoclear;
+	u32			isoc_bei_interval;
 	/* For interrupter registers save and restore over suspend/resume */
 	u32	s3_irq_pending;
 	u32	s3_irq_control;
@@ -1505,7 +1506,6 @@ struct xhci_hcd {
 	u8		isoc_threshold;
 	/* imod_interval in ns (I * 250ns) */
 	u32		imod_interval;
-	u32		isoc_bei_interval;
 	int		event_ring_max;
 	/* 4KB min, 128MB max */
 	int		page_size;