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| author | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2010-03-16 22:59:24 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-19 17:24:24 +0300 |
| commit | 9ce669a8924c61b7321d6e2f27ed67bcd46c1fbb (patch) | |
| tree | dd479c02f9fe84a4c5ad9e4d4cb9d58beddf07d6 /drivers/usb/host | |
| parent | f09a15e6e69884cedec4d1c022089a973aa01f1e (diff) | |
| download | linux-9ce669a8924c61b7321d6e2f27ed67bcd46c1fbb.tar.xz | |
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/host')
| -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, 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: |