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path: root/drivers/ata/libata-acpi.c
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Diffstat (limited to 'drivers/ata/libata-acpi.c')
-rw-r--r--drivers/ata/libata-acpi.c45
1 files changed, 27 insertions, 18 deletions
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 1c33f78040c6..f6d80e342310 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -60,7 +60,8 @@ acpi_handle ata_ap_acpi_handle(struct ata_port *ap)
if (ap->flags & ATA_FLAG_ACPI_SATA)
return NULL;
- return acpi_get_child(DEVICE_ACPI_HANDLE(ap->host->dev), ap->port_no);
+ return ap->scsi_host ?
+ DEVICE_ACPI_HANDLE(&ap->scsi_host->shost_gendev) : NULL;
}
EXPORT_SYMBOL(ata_ap_acpi_handle);
@@ -239,28 +240,15 @@ void ata_acpi_dissociate(struct ata_host *host)
}
}
-/**
- * ata_acpi_gtm - execute _GTM
- * @ap: target ATA port
- * @gtm: out parameter for _GTM result
- *
- * Evaluate _GTM and store the result in @gtm.
- *
- * LOCKING:
- * EH context.
- *
- * RETURNS:
- * 0 on success, -ENOENT if _GTM doesn't exist, -errno on failure.
- */
-int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *gtm)
+static int __ata_acpi_gtm(struct ata_port *ap, acpi_handle handle,
+ struct ata_acpi_gtm *gtm)
{
struct acpi_buffer output = { .length = ACPI_ALLOCATE_BUFFER };
union acpi_object *out_obj;
acpi_status status;
int rc = 0;
- status = acpi_evaluate_object(ata_ap_acpi_handle(ap), "_GTM", NULL,
- &output);
+ status = acpi_evaluate_object(handle, "_GTM", NULL, &output);
rc = -ENOENT;
if (status == AE_NOT_FOUND)
@@ -294,6 +282,27 @@ int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *gtm)
return rc;
}
+/**
+ * ata_acpi_gtm - execute _GTM
+ * @ap: target ATA port
+ * @gtm: out parameter for _GTM result
+ *
+ * Evaluate _GTM and store the result in @gtm.
+ *
+ * LOCKING:
+ * EH context.
+ *
+ * RETURNS:
+ * 0 on success, -ENOENT if _GTM doesn't exist, -errno on failure.
+ */
+int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *gtm)
+{
+ if (ata_ap_acpi_handle(ap))
+ return __ata_acpi_gtm(ap, ata_ap_acpi_handle(ap), gtm);
+ else
+ return -EINVAL;
+}
+
EXPORT_SYMBOL_GPL(ata_acpi_gtm);
/**
@@ -1047,7 +1056,7 @@ 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)
+ if (__ata_acpi_gtm(ap, *handle, &ap->__acpi_init_gtm) == 0)
ap->pflags |= ATA_PFLAG_INIT_GTM_VALID;
return 0;