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[PATCH] libata: implement ata_dev_enabled and disabled()

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This patch renames ata_dev_present() to ata_dev_enabled() and adds
ata_dev_disabled().  This is to discern the state where a device is
present but disabled from not-present state.  This disctinction is
necessary when configuring transfer mode because device selection
timing must not be violated even if a device fails to configure.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo
2006-04-01 01:38:18 +09:00
committed by Jeff Garzik
parent 9974e7cc6c
commit e1211e3fa7
5 changed files with 29 additions and 19 deletions
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2
drivers/scsi/sata_mv.c
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@@ -1991,7 +1991,7 @@ comreset_retry:
tf.nsect = readb((void __iomem *) ap->ioaddr.nsect_addr);
dev->class = ata_dev_classify(&tf);
if (!ata_dev_present(dev)) {
if (!ata_dev_enabled(dev)) {
VPRINTK("Port disabled post-sig: No device present.\n");
ata_port_disable(ap);
}