From: Sarah Sharp Date: Tue, 16 Mar 2010 19:59:24 +0000 (-0700) Subject: USB: xhci: Make endpoint interval debugging clearer. X-Git-Tag: upstream/snapshot3+hdmi~15032^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9ce669a8924c61b7321d6e2f27ed67bcd46c1fbb;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git 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 Signed-off-by: Greg Kroah-Hartman --- 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 @@ static inline unsigned int xhci_get_endpoint_interval(struct usb_device *udev, 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: