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[libata] acpi: call ata_acpi_gtm during ata port init time

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Commit 30dcf76acc mistakenly dropped
the code to get an initial gtm for the IDE channel. This caused the
following problem for Sergei:
http://marc.info/?l=linux-kernel&m=134484963618457&w=2

Fix this by adding the call back in ata_acpi_bind_host, and due to
this, the ata_ap_acpi_handle is modified accordingly.

Tested-by: Sergei Trofimovich <slyich@gmail.com>
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Aaron Lu 2012-08-15 17:08:12 +08:00 committed by Jeff Garzik
parent 389cd78496
commit 8340091709
1 changed files with 4 additions and 11 deletions
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15
drivers/ata/libata-acpi.c
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@ -60,17 +60,7 @@ acpi_handle ata_ap_acpi_handle(struct ata_port *ap)
if (ap->flags & ATA_FLAG_ACPI_SATA)
return NULL;
/*
* If acpi bind operation has already happened, we can get the handle
* for the port by checking the corresponding scsi_host device's
* firmware node, otherwise we will need to find out the handle from
* its parent's acpi node.
*/
if (ap->scsi_host)
return DEVICE_ACPI_HANDLE(&ap->scsi_host->shost_gendev);
else
return acpi_get_child(DEVICE_ACPI_HANDLE(ap->host->dev),
ap->port_no);
return acpi_get_child(DEVICE_ACPI_HANDLE(ap->host->dev), ap->port_no);
}
EXPORT_SYMBOL(ata_ap_acpi_handle);
@ -1101,6 +1091,9 @@ static int ata_acpi_bind_host(struct ata_port *ap, acpi_handle *handle)
if (!*handle)
return -ENODEV;
if (ata_acpi_gtm(ap, &ap->__acpi_init_gtm) == 0)
ap->pflags |= ATA_PFLAG_INIT_GTM_VALID;
return 0;
}