Messages in this thread | | | Subject | RE: USB host pci-quirks | Date | Thu, 26 Jan 2006 15:16:35 -0800 | From | "Aleksey Gorelov" <> |
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>-----Original Message----- >From: Oskar Senft [mailto:osk-lkml@sirrix.de] >Sent: Thursday, January 26, 2006 2:38 PM >To: Aleksey Gorelov; linux-kernel@vger.kernel.org >Subject: Re: USB host pci-quirks > >Dear Aleksey, > >thank you for your e-mail! > >>>Is there a special need, that the "drivers/usb/host/pci-quirks.c" is >>>compiled into the kernel even if USB support is disabled? >> >> Yes, there is. USB handoff is necessary even if USB support is >> disabled completely in kernel. In fact, initially early usb >handoff code >> was under pci, but since USB drivers do handoff anyway, it >was decided >> to move everything into usb with a goal of merging them together. >> Just search for USB handoff in kernel archives. > >I see ... but as David Brownell already stated on Thu Sep 02 2004 - >20:07:57 EST: >For backwards compatibility, the early reset should not be the >default. There aren't many systems where it's a problem. > >What happened to that argument?
There's been a lot of reports since then for hardware which does require handoff. Hence it's been made default. I did not see any compatibility issues, but that does not mean they do not exist.
Aleks.
> >Regards, >Oskar. > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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