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[PATCH] libata: add 5s sleep between resets

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Some devices react badly if resets are performed back-to-back.  Give
devices some time to breath and tell user that we're taking a nap.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2006-04-02 20:55:02 +09:00 committed by Jeff Garzik
parent 90dac02c08
commit edbabd8679
1 changed files with 14 additions and 1 deletions
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15
drivers/scsi/libata-core.c
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@ -2582,6 +2582,9 @@ int ata_drive_probe_reset(struct ata_port *ap, ata_probeinit_fn_t probeinit,
rc = ata_do_reset(ap, softreset, postreset, 0, classes); rc = ata_do_reset(ap, softreset, postreset, 0, classes);
if (rc == 0 && classes[0] != ATA_DEV_UNKNOWN) if (rc == 0 && classes[0] != ATA_DEV_UNKNOWN)
goto done; goto done;
printk(KERN_INFO "ata%u: softreset failed, will try "
"hardreset in 5 secs\n", ap->id);
ssleep(5);
} }
if (!hardreset) if (!hardreset)
@ -2597,10 +2600,20 @@ int ata_drive_probe_reset(struct ata_port *ap, ata_probeinit_fn_t probeinit,
if (ata_down_sata_spd_limit(ap)) if (ata_down_sata_spd_limit(ap))
goto done; goto done;
printk(KERN_INFO "ata%u: hardreset failed, will retry "
"in 5 secs\n", ap->id);
ssleep(5);
} }
if (softreset) if (softreset) {
printk(KERN_INFO "ata%u: hardreset succeeded without "
"classification, will retry softreset in 5 secs\n",
ap->id);
ssleep(5);
rc = ata_do_reset(ap, softreset, postreset, 0, classes); rc = ata_do_reset(ap, softreset, postreset, 0, classes);
}
done: done:
if (rc == 0 && classes[0] == ATA_DEV_UNKNOWN) if (rc == 0 && classes[0] == ATA_DEV_UNKNOWN)