Re: [linux-usb-devel] [PATCH 2.6.21] Work around for PPC440EPX USBH_23 errrata

2007-05-21 Thread Mark Miesfeld
On Sunday, May 20, 2007, David Brownell > On Sunday 20 May 2007, Pete Zaitcev wrote: > > On Fri, 18 May 2007 14:23:43 -0700, "Mark Miesfeld" <[EMAIL PROTECTED]> wrote: > > > > And this is the part which implements poking: > > > > > +++ b/drivers/usb/host/ohci-ppc-soc.c > > > @@ -20,6 +20,37 @@ #

Re: [linux-usb-devel] [PATCH 2.6.21] Work around for PPC440EPX USBH_23 errrata

2007-05-21 Thread Mark Miesfeld
On Sunday, May 20, 2007, Pete Zaitcev wrote: > On Sun, 20 May 2007 21:55:58 -0700, David Brownell > <[EMAIL PROTECTED]> wrote: > > > If you're going to turn on the OHCI hardware, do it the > > normal way; don't bypass its driver. > > How exactly do you suggest we do this? > > The problem is no

Re: [linux-usb-devel] [PATCH 2.6.21] Work around for PPC440EPX USBH_23 errrata

2007-05-21 Thread Mark Miesfeld
On Sunday, May 20, 2007, Pete Zaitcev wrote: > On Fri, 18 May 2007 14:23:43 -0700, "Mark Miesfeld" <[EMAIL PROTECTED]> wrote: > > > There is a published errata for the PPC440EPX, USBH_23: EHCI and OHCI > > Linux module contention. > > So, you're set for the classic (and unsoluble) inter-module

Re: [linux-usb-devel] [PATCH 2.6.21] Work around for PPC440EPX USBH_23 errrata

2007-05-20 Thread Pete Zaitcev
On Sun, 20 May 2007 21:55:58 -0700, David Brownell <[EMAIL PROTECTED]> wrote: > If you're going to turn on the OHCI hardware, do it the > normal way; don't bypass its driver. How exactly do you suggest we do this? The problem is not quite dissimilar to that of BIOS handoff. There, we solved the

Re: [linux-usb-devel] [PATCH 2.6.21] Work around for PPC440EPX USBH_23 errrata

2007-05-20 Thread David Brownell
On Sunday 20 May 2007, Pete Zaitcev wrote: > On Fri, 18 May 2007 14:23:43 -0700, "Mark Miesfeld" <[EMAIL PROTECTED]> wrote: > > And this is the part which implements poking: > > > +++ b/drivers/usb/host/ohci-ppc-soc.c > > @@ -20,6 +20,37 @@ #include > > /* always called with process context; sl

Re: [linux-usb-devel] [PATCH 2.6.21] Work around for PPC440EPX USBH_23 errrata

2007-05-20 Thread Pete Zaitcev
On Fri, 18 May 2007 14:23:43 -0700, "Mark Miesfeld" <[EMAIL PROTECTED]> wrote: > There is a published errata for the PPC440EPX, USBH_23: EHCI and OHCI > Linux module contention. The overview states: When running Linux with > both EHCI and OHCI modules loaded, the EHCI module experiences a fatal >