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libata: unify mechanism to request follow-up SRST

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Previously, there were two ways to trigger follow-up SRST from
hardreset method - returning -EAGAIN and leaving all device classes
unmodified.  Drivers never used the latter mechanism and the only use
case for the former was when hardreset couldn't classify.

Drop the latter mechanism and let -EAGAIN mean "perform follow-up SRST
if classification is required".  This change removes unnecessary
follow-up SRSTs and simplifies reset implementations.

Signed-off-by: Tejun Heo <htejun@gmail.com>
This commit is contained in:
Tejun Heo
2008-04-07 22:47:20 +09:00
committed by Jeff Garzik
parent 5958e3025f
commit 305d2a1ab1
4 changed files with 8 additions and 23 deletions
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drivers/ata/libata-sff.c
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@ -1929,7 +1929,6 @@ int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
rc = sata_link_hardreset(link, timing, deadline, &online,
ata_sff_check_ready);
*class = ATA_DEV_NONE;
if (online)
*class = ata_sff_dev_classify(link->device, 1, NULL);