USB: xhci: rework xhci_print_ir_set() to get ir set from xhci itself

xhci->ir_set points to __iomem region, but xhci_print_ir_set accepts
plain struct xhci_intr_reg * causing multiple sparse warning at call
sites and inside the fucntion when we try to read that memory.

Instead of adding __iomem qualifier to the argument let's rework the
function so it itself gets needed register set from xhci and prints
it.
Signed-off-by: NDmitry Torokhov <dtor@vmware.com>
Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com>

drivers/usb/host/xhci-dbg.c

@@ -169,9 +169,10 @@ static void xhci_print_ports(struct xhci_hcd *xhci)
 	}
 }
 
-void xhci_print_ir_set(struct xhci_hcd *xhci, struct xhci_intr_reg *ir_set, int set_num)
+void xhci_print_ir_set(struct xhci_hcd *xhci, int set_num)
 {
-	void *addr;
+	struct xhci_intr_reg __iomem *ir_set = &xhci->run_regs->ir_set[set_num];
+	void __iomem *addr;
 	u32 temp;
 	u64 temp_64;
 

drivers/usb/host/xhci-mem.c

@@ -1961,7 +1961,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
 	/* Set the event ring dequeue address */
 	xhci_set_hc_event_deq(xhci);
 	xhci_dbg(xhci, "Wrote ERST address to ir_set 0.\n");
-	xhci_print_ir_set(xhci, xhci->ir_set, 0);
+	xhci_print_ir_set(xhci, 0);
 
 	/*
 	 * XXX: Might need to set the Interrupter Moderation Register to

drivers/usb/host/xhci.c

@@ -473,7 +473,7 @@ int xhci_run(struct usb_hcd *hcd)
 			xhci->ir_set, (unsigned int) ER_IRQ_ENABLE(temp));
 	xhci_writel(xhci, ER_IRQ_ENABLE(temp),
 			&xhci->ir_set->irq_pending);
-	xhci_print_ir_set(xhci, xhci->ir_set, 0);
+	xhci_print_ir_set(xhci, 0);
 
 	if (NUM_TEST_NOOPS > 0)
 		doorbell = xhci_setup_one_noop(xhci);
@@ -528,7 +528,7 @@ void xhci_stop(struct usb_hcd *hcd)
 	temp = xhci_readl(xhci, &xhci->ir_set->irq_pending);
 	xhci_writel(xhci, ER_IRQ_DISABLE(temp),
 			&xhci->ir_set->irq_pending);
-	xhci_print_ir_set(xhci, xhci->ir_set, 0);
+	xhci_print_ir_set(xhci, 0);
 
 	xhci_dbg(xhci, "cleaning up memory\n");
 	xhci_mem_cleanup(xhci);
@@ -755,7 +755,7 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
 		temp = xhci_readl(xhci, &xhci->ir_set->irq_pending);
 		xhci_writel(xhci, ER_IRQ_DISABLE(temp),
 				&xhci->ir_set->irq_pending);
-		xhci_print_ir_set(xhci, xhci->ir_set, 0);
+		xhci_print_ir_set(xhci, 0);
 
 		xhci_dbg(xhci, "cleaning up memory\n");
 		xhci_mem_cleanup(xhci);

drivers/usb/host/xhci.h

@@ -1348,7 +1348,7 @@ static inline int xhci_link_trb_quirk(struct xhci_hcd *xhci)
 }
 
 /* xHCI debugging */
-void xhci_print_ir_set(struct xhci_hcd *xhci, struct xhci_intr_reg *ir_set, int set_num);
+void xhci_print_ir_set(struct xhci_hcd *xhci, int set_num);
 void xhci_print_registers(struct xhci_hcd *xhci);
 void xhci_dbg_regs(struct xhci_hcd *xhci);
 void xhci_print_run_regs(struct xhci_hcd *xhci);