On Thu, 30 Dec 2010, Sarah Sharp wrote: > USB 3.0 devices have a slightly different suspend sequence than USB > 2.0/1.1 devices. There isn't support for USB 3.0 device suspend yet, so > make khubd leave autosuspend disabled for USB 3.0 hubs. > > Signed-off-by: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx> > --- > drivers/usb/core/hub.c | 9 +++++++-- > 1 files changed, 7 insertions(+), 2 deletions(-) > > diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c > index 8a5ea2b..aca1cce 100644 > --- a/drivers/usb/core/hub.c > +++ b/drivers/usb/core/hub.c > @@ -1288,8 +1288,13 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id) > desc = intf->cur_altsetting; > hdev = interface_to_usbdev(intf); > > - /* Hubs have proper suspend/resume support */ > - usb_enable_autosuspend(hdev); > + /* Hubs have proper suspend/resume support. USB 3.0 device suspend > + * is different than USB 2.0/1.1 device suspend, and unfortunately we s/different than/different from/ (and likewise in the patch description) > + * don't support it yet. So leave autosuspend disabled that for s/disabled that/disabled/ > + * USB 3.0 hubs for now. > + */ > + if (!hub_is_superspeed(hdev)) > + usb_enable_autosuspend(hdev); Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
