On Wed, Oct 24, 2012 at 08:55:09PM +0000, David Binderman wrote:
>
>
> Hello there,
>
> The source code is from the subject line is
>
> static bool xhci_is_sync_in_ep(unsigned int ep_type)
> {
> return (ep_type == ISOC_IN_EP || ep_type != INT_IN_EP);
> }
>
> The static analyser cppcheck says
>
> [linux-3.7-rc2/drivers/usb/host/xhci.c:2257]: (style) Redundant condition: If
> ep_type == 5, the comparison ep_type != 7 is always true.
>
> Maybe the original programmer intention was something like
>
> static bool xhci_is_sync_in_ep(unsigned int ep_type)
> {
> return (ep_type == ISOC_IN_EP || ep_type == INT_IN_EP);
> }
>
> Suggest code rework.
Thanks for catching that! I think your analysis is correct, but since
the fix impacts the Panther Point xHCI bandwidth calculations, I need to
do some testing with SuperSpeed interrupt IN endpoints (probably on USB3
hubs) before I submit a patch.
Sarah Sharp
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