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libata: add @spd_limit to sata_down_spd_limit()

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Add @spd_limit to sata_down_spd_limit() so that the caller can specify
the SPD limit it wants.  This parameter doesn't get in the way even
when it's too low.  The closest possible limit is applied.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Tejun Heo
2009-01-29 20:31:33 +09:00
committed by Jeff Garzik
parent 99cf610aa4
commit a07d499b47
4 changed files with 27 additions and 12 deletions
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10
drivers/ata/libata-eh.c
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@@ -1875,7 +1875,7 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev,
/* speed down? */
if (verdict & ATA_EH_SPDN_SPEED_DOWN) {
/* speed down SATA link speed if possible */
if (sata_down_spd_limit(link) == 0) {
if (sata_down_spd_limit(link, 0) == 0) {
action |= ATA_EH_RESET;
goto done;
}
@@ -2627,11 +2627,11 @@ int ata_eh_reset(struct ata_link *link, int classify,
}
if (try == max_tries - 1) {
sata_down_spd_limit(link);
sata_down_spd_limit(link, 0);
if (slave)
sata_down_spd_limit(slave);
sata_down_spd_limit(slave, 0);
} else if (rc == -EPIPE)
sata_down_spd_limit(failed_link);
sata_down_spd_limit(failed_link, 0);
if (hardreset)
reset = hardreset;
@@ -3011,7 +3011,7 @@ static int ata_eh_handle_dev_fail(struct ata_device *dev, int err)
/* This is the last chance, better to slow
* down than lose it.
*/
sata_down_spd_limit(ata_dev_phys_link(dev));
sata_down_spd_limit(ata_dev_phys_link(dev), 0);
if (dev->pio_mode > XFER_PIO_0)
ata_down_xfermask_limit(dev, ATA_DNXFER_PIO);
}