xhci: print warning when HCE was set

When HCE(Host Controller Error) is set, it means that the xhci hardware
controller has an error at this time, but the current xhci driver
software does not log this event.

By adding an HCE event detection in the xhci interrupt processing
interface, a warning log is output to the system, which is convenient
for system device status tracking.

Signed-off-by: Longfang Liu <[email protected]>
Signed-off-by: Mathias Nyman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Longfang Liu

drivers/usb/host/xhci-ring.c

@@ -3031,6 +3031,11 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd)
 	if (!(status & STS_EINT))
 		goto out;
 
+	if (status & STS_HCE) {
+		xhci_warn(xhci, "WARNING: Host Controller Error\n");
+		goto out;
+	}
+
 	if (status & STS_FATAL) {
 		xhci_warn(xhci, "WARNING: Host System Error\n");
 		xhci_halt(xhci);