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Message-ID: <20070312220015.094b7759@lxorguk.ukuu.org.uk> Date: Mon, 12 Mar 2007 22:00:15 +0000 From: Alan Cox <alan@...rguk.ukuu.org.uk> To: Kristen Carlson Accardi <kristen.c.accardi@...el.com> Cc: Jeff Garzik <jeff@...zik.org>, len.brown@...el.com, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, IDE/ATA development list <linux-ide@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org>, Linus Torvalds <torvalds@...ux-foundation.org> Subject: Re: libata-acpi: allow _GTF on SATA, but disable on PATA for now > Meanwhile, to solve the problem for these people, and without introducing > a lot of new code at this stage in the release, perhaps you can suggest > a more accurate way to detect PATA vs. SATA so we can fix the bug? I think the problem starts with the question. It supposes the BIOS knows the answer to the question in the first place. It also supposes we haven't reconfigured the port in some cases I believe. My guess is the problem needs approaching from the other end. Ask the question "What does the ACPI BIOS expect it to be ?". If I follow the spec correctly we can answer that question by asking what methods (_SDD, _GTF etc) it provides. I don't think anything else is reliable. Alan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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