diff options
author | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2010-03-16 15:59:24 -0400 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-19 10:24:24 -0400 |
commit | 9ce669a8924c61b7321d6e2f27ed67bcd46c1fbb (patch) | |
tree | dd479c02f9fe84a4c5ad9e4d4cb9d58beddf07d6 /drivers/usb | |
parent | f09a15e6e69884cedec4d1c022089a973aa01f1e (diff) |
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>
Diffstat (limited to 'drivers/usb')
-rw-r--r-- | drivers/usb/host/xhci-mem.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 49f7d72f8b1b..bba9b19ed1b9 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, | |||
566 | if (interval < 3) | 566 | if (interval < 3) |
567 | interval = 3; | 567 | interval = 3; |
568 | if ((1 << interval) != 8*ep->desc.bInterval) | 568 | if ((1 << interval) != 8*ep->desc.bInterval) |
569 | dev_warn(&udev->dev, "ep %#x - rounding interval to %d microframes\n", | 569 | dev_warn(&udev->dev, |
570 | ep->desc.bEndpointAddress, 1 << interval); | 570 | "ep %#x - rounding interval" |
571 | " to %d microframes, " | ||
572 | "ep desc says %d microframes\n", | ||
573 | ep->desc.bEndpointAddress, | ||
574 | 1 << interval, | ||
575 | 8*ep->desc.bInterval); | ||
571 | } | 576 | } |
572 | break; | 577 | break; |
573 | default: | 578 | default: |