From: Alan <alan@lxorguk.ukuu.org.uk>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: conke.hu@amd.com
Subject: Re: atiixp.c: add cable detection support for ATI IDE
Date: Tue, 30 Jan 2007 22:37:23 +0000 [thread overview]
Message-ID: <20070130223723.10d35b87@localhost.localdomain> (raw)
In-Reply-To: <200701301859.l0UIxaqX025758@hera.kernel.org>
> IDE HDD does not work if it uses a 40-pin PATA cable on ATI chipset.
> This patch fixes the bug.
>
> Signed-off-by: Conke Hu <conke.hu@amd.com>
Doe this actually work if the driver is loaded after a suspend to ram and
resume ?
> - hwif->udma_four = 1;
> + pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode);
> + if ((udma_mode & 0x07) >= 0x04 || (udma_mode & 0x70) >= 0x40)
> + hwif->udma_four = 1;
> + else
> + hwif->udma_four = 0;
> +
How does the actual cable detection work rather than relying on the BIOS
modes to guess the cable ?
Alan
parent reply other threads:[~2007-01-30 22:25 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <200701301859.l0UIxaqX025758@hera.kernel.org>]
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