From ae68a83bdc1971cb02fefc7a686ba6d077065e71 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 14 Jul 2010 11:03:23 -0400 Subject: USB: EHCI: remove PCI assumption This patch (as1405) fixes a small bug in ehci-hcd's isochronous scheduler. Not all EHCI controllers are PCI, and the code shouldn't assume that they are. Instead, introduce a special flag for controllers which need to delay iso scheduling for full-speed devices beyond the scheduling threshold. Signed-off-by: Alan Stern CC: Sarah Sharp CC: David Brownell CC: stable Acked-by: Sarah Sharp --- drivers/usb/host/ehci-sched.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'drivers/usb/host/ehci-sched.c') diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index d640346f9b56..efadced4ae67 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -1399,7 +1399,6 @@ iso_stream_schedule ( int status; unsigned mod = ehci->periodic_size << 3; struct ehci_iso_sched *sched = urb->hcpriv; - struct pci_dev *pdev; if (sched->span > (mod - SCHEDULE_SLOP)) { ehci_dbg (ehci, "iso request %p too long\n", urb); @@ -1426,15 +1425,14 @@ iso_stream_schedule ( * slot in the schedule, implicitly assuming URB_ISO_ASAP. */ if (likely (!list_empty (&stream->td_list))) { - pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller); start = stream->next_uframe; /* For high speed devices, allow scheduling within the - * isochronous scheduling threshold. For full speed devices, - * don't. (Work around for Intel ICH9 bug.) + * isochronous scheduling threshold. For full speed devices + * and Intel PCI-based controllers, don't (work around for + * Intel ICH9 bug). */ - if (!stream->highspeed && - pdev->vendor == PCI_VENDOR_ID_INTEL) + if (!stream->highspeed && ehci->fs_i_thresh) next = now + ehci->i_thresh; else next = now; -- cgit v1.2.2