Re: CDROM drive not found when booting using new libata code

[Tejun Heo <htejun@gmail.com>]

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Tejun Heo wrote:
> Art Haas wrote:
>> Sorry to report that patch did not work. I applied the patch against
>> Linus's tree this morning, built and installed that kernel, and
>> the CD-ROM was not found. I also tried the patch with an update
>> from Linus's tree from this evening, and again the same result.
> 
> Hello, Art.
> 
> Can you please test the attached patch?  The patch is against 2.6.19.
> Please give me my late christmas gift.

Please test this patch too.  TIA.

-- 
tejun

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diff --git a/include/linux/libata.h b/include/linux/libata.h
index abd2deb..7a4cf9e 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1166,6 +1166,14 @@ static inline u8 ata_irq_on(struct ata_port *ap)
 	ap->ctl &= ~ATA_NIEN;
 	ap->last_ctl = ap->ctl;
 
+	ap->ops->dev_select(ap, 1);
+	if (ap->flags & ATA_FLAG_MMIO)
+		writeb(ap->ctl, (void __iomem *) ioaddr->ctl_addr);
+	else
+		outb(ap->ctl, ioaddr->ctl_addr);
+	tmp = ata_wait_idle(ap);
+
+	ap->ops->dev_select(ap, 0);
 	if (ap->flags & ATA_FLAG_MMIO)
 		writeb(ap->ctl, (void __iomem *) ioaddr->ctl_addr);
 	else