From: Alan Stern
> On Tue, 15 Jul 2014, Pratyush Anand wrote:
...
> > +static int wait_for_ss_port_enable(struct usb_device *udev,
> > + struct usb_hub *hub,
> > + int *port1,
> > + u16 *portchange,
> > + u16 *portstatus)
>
> Continuation lines should be indented by 2 tab stops, not 5.
>
> > +{
> > + int status, wait_count_20ms = 0;
> > +
> > + while (wait_count_20ms++ < 20) {
> > + status = hub_port_status(hub, *port1, portstatus, portchange);
> > + if (status || *portstatus & USB_PORT_STAT_CONNECTION)
> > + return status;
> > + msleep(20);
> > + }
> > + return hub_port_status(hub, *port1, portstatus, portchange);
> > +}
>
> This might be a little clearer:
>
> int status = 0, delay_ms = 0;
>
> whle (delay_ms < 400) {
> if (status || (*portstatus & USB_PORT_STAT_CONNECTION))
> break;
> msleep(20);
> delay_ms += 20;
> status = hub_port_status(hub, *port1, portstatus, portchange);
> }
> return status;
I think I would write:
for (ms_delay = 0; (ms_delay += 20) <= 400; msleep(20)) {
status = hub_port_status(hub, *port1, portstatus, portchange);
if (status)
return status;
if (*portstatus & USB_PORT_STAT_CONNECTION)
return 0;
}
return 0;
David
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