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Remove the check which disallows to connect a bus powered hub to another 

bus powered hub. While one can interpret the spec that way, it is not
stated clearly, and is at most a side effect of power budgeting.
Also, there are devices which don't report correctly whether they
are self powered, so the check was unreliable.
This commit is contained in:
drochner 2007-02-26 13:33:09 +00:00
parent ff825e3a80
commit a0afd1c3d9
1 changed files with 2 additions and 15 deletions
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17
sys/dev/usb/uhub.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: uhub.c,v 1.84 2007/01/07 16:50:02 drochner Exp $ */
/* $NetBSD: uhub.c,v 1.85 2007/02/26 13:33:09 drochner Exp $ */
/* $FreeBSD: src/sys/dev/usb/uhub.c,v 1.18 1999/11/17 22:33:43 n_hibma Exp $ */
/*
@ -43,7 +43,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uhub.c,v 1.84 2007/01/07 16:50:02 drochner Exp $");
__KERNEL_RCSID(0, "$NetBSD: uhub.c,v 1.85 2007/02/26 13:33:09 drochner Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -223,19 +223,6 @@ USB_ATTACH(uhub)
hub->explore = uhub_explore;
hub->hubdesc = hubdesc;
DPRINTFN(1,("usbhub_init_hub: selfpowered=%d, parent=%p, "
"parent->selfpowered=%d\n",
dev->self_powered, dev->powersrc->parent,
dev->powersrc->parent ?
dev->powersrc->parent->self_powered : 0));
if (!dev->self_powered && dev->powersrc->parent != NULL &&
!dev->powersrc->parent->self_powered) {
printf("%s: bus powered hub connected to bus powered hub, "
"ignored\n", USBDEVNAME(sc->sc_dev));
goto bad;
}
/* Set up interrupt pipe. */
err = usbd_device2interface_handle(dev, 0, &iface);
if (err) {