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SATA: Blacklisting of systems that spin off disks during ACPI power off

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Introduce new libata flags ATA_FLAG_NO_POWEROFF_SPINDOWN and
ATA_FLAG_NO_HIBERNATE_SPINDOWN that, if set, will prevent disks from
being spun off during system power off and hibernation, respectively
(to handle the hibernation case we need the new system state
SYSTEM_HIBERNATE_ENTER that can be checked against by libata, in
analogy with SYSTEM_POWER_OFF).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Rafael J. Wysocki 2009-01-19 20:56:43 +01:00 • committed by Jeff Garzik
parent d7b1956fed
commit 2a6e58d273
2 changed files with 19 additions and 3 deletions
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2
include/linux/libata.h
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@ -187,6 +187,8 @@ enum {
ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
* doesn't handle PIO interrupts */
ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */
ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
ATA_FLAG_DEBUGMSG = (1 << 13),
ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */