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Message-ID: <20071026013517.0063e24a@the-village.bc.nu> Date: Fri, 26 Oct 2007 01:35:17 +0100 From: Alan Cox <alan@...rguk.ukuu.org.uk> To: Bartlomiej Zolnierkiewicz <bzolnier@...il.com> Cc: linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 2/3] ide: fix drive_is_ready() for non-PCI hosts and CONFIG_IDEPCI_SHARE_IRQ=y On Fri, 26 Oct 2007 02:30:52 +0200 Bartlomiej Zolnierkiewicz <bzolnier@...il.com> wrote: > On Friday 26 October 2007, Alan Cox wrote: > > On Fri, 26 Oct 2007 01:36:37 +0200 > > Bartlomiej Zolnierkiewicz <bzolnier@...il.com> wrote: > > > > > > > > Need to check if the host is a PCI one before reading IDE_ALTSTATUS_REG. > > > > > > Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com> > > > > Umm why ? The altstatus register goes back to ST-506 and the original IBM > > XT hard disk controller card ? > > Thought that there have to be some (non-obvious) reason behing the fact that > IDE_ALTSTATUS_REG reading was covered by #ifdef CONFIG_IDEPCI_SHARE_IRQ. Only that reading altstatus is done to get the state without clearing the IRQ which a status read would do. 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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