USB: xhci: Make endpoint interval debugging clearer.
The xHCI hardware can only handle polling intervals that are a power of
two. When we add a new endpoint during a bandwidth allocation, and the
polling interval is rounded down to a power of two, print the original
polling interval in the endpoint descriptor.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 49f7d72..bba9b19 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -566,8 +566,13 @@
if (interval < 3)
interval = 3;
if ((1 << interval) != 8*ep->desc.bInterval)
- dev_warn(&udev->dev, "ep %#x - rounding interval to %d microframes\n",
- ep->desc.bEndpointAddress, 1 << interval);
+ dev_warn(&udev->dev,
+ "ep %#x - rounding interval"
+ " to %d microframes, "
+ "ep desc says %d microframes\n",
+ ep->desc.bEndpointAddress,
+ 1 << interval,
+ 8*ep->desc.bInterval);
}
break;
default: