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| author | Tejun Heo <htejun@gmail.com> | 2007-05-14 22:28:16 +0400 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-07-09 20:17:32 +0400 |
| commit | 64578a3de723d502621860f9d4d28f34d001b066 (patch) | |
| tree | 821e7ad8e8d6c3a0f3224b479ff000e00001a165 /drivers/ata/libata-eh.c | |
| parent | e5fa24dfdb522b642dbe9b8b1b692f68dce89835 (diff) | |
| download | linux-64578a3de723d502621860f9d4d28f34d001b066.tar.xz | |
libata-acpi: implement _GTM/_STM support
Implement _GTM/_STM support. acpi_gtm is added to ata_port which
stores _GTM parameters over suspend/resume cycle. A new hook
ata_acpi_on_suspend() is responsible for storing _GTM parameters
during suspend. _STM is executed in ata_acpi_on_resume(). With this
change, invoking _GTF is safe on IDE hierarchy and acpi_sata check
before _GTF is removed.
ata_acpi_gtm() and ata_acpi_stm() implementation is taken from Alan
Cox's pata_acpi implementation. ata_acpi_gtm() is fixed such that the
result parameter is not shifted by sizeof(union acpi_object).
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/libata-eh.c')
| -rw-r--r-- | drivers/ata/libata-eh.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index fed217db82d2..9ee0a8c08d96 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2154,19 +2154,25 @@ static void ata_eh_handle_port_suspend(struct ata_port *ap) WARN_ON(ap->pflags & ATA_PFLAG_SUSPENDED); + /* tell ACPI we're suspending */ + rc = ata_acpi_on_suspend(ap); + if (rc) + goto out; + /* suspend */ ata_eh_freeze_port(ap); if (ap->ops->port_suspend) rc = ap->ops->port_suspend(ap, ap->pm_mesg); + out: /* report result */ spin_lock_irqsave(ap->lock, flags); ap->pflags &= ~ATA_PFLAG_PM_PENDING; if (rc == 0) ap->pflags |= ATA_PFLAG_SUSPENDED; - else + else if (ap->pflags & ATA_PFLAG_FROZEN) ata_port_schedule_eh(ap); if (ap->pm_result) { |