On Wed, Dec 05, 2012 at 12:19:34PM -0500, Alan Stern wrote:
> On Tue, 4 Dec 2012, Sarah Sharp wrote:
> > @@ -2534,6 +2534,10 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
> > if (ret < 0)
> > return ret;
> >
> > + /* The port state is unknown until the reset completes. */
> > + if ((portstatus & USB_PORT_STAT_RESET))
> > + goto delay;
> > +
> > /*
> > * Some buggy devices require a warm reset to be issued even
> > * when the port appears not to be connected.
> > @@ -2601,6 +2605,7 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
> > return 0;
> > }
> >
> > +delay:
> > /* switch to the long delay after two short delay failures */
> > if (delay_time >= 2 * HUB_SHORT_RESET_TIME)
> > delay = HUB_LONG_RESET_TIME;
>
> At some point this entire loop should be turned inside out. The
> outline should be:
>
> for (delay_time = 0; ...) {
> msleep(delay);
>
> ret = hub_port_status(...);
> if (reset finished)
> break;
>
> adjust the delay time
> }
>
> Do all the stuff involving the various status bits...
>
> Maybe you'd prefer to make this change after some of the other patches
> in this series. That would be fine, so long as it does eventually get
> made.
Ok, I'll refactor this in the patches that aren't bound for stable.
Sarah Sharp
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