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

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>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index 2c6bd66209ff..bca3ba25f52a 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -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 */