[PATCH] libata: ACPI _SDD support

_SDD (Set Device Data) is an ACPI method that is used to tell the
firmware what the identify data is of the device that is attached to
the port.  It is an optional method, and it's ok for it to be missing.
Because of this, we always return success from the routine that calls
this method, even if the execution fails.

Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
(cherry picked from 39aa79e0a1f5f2e28aa341f035940746a98b45b1 commit)

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index ea02903e8503..0ad7781d72a3 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -91,11 +91,16 @@ extern struct ata_probe_ent *ata_probe_ent_alloc(struct device *dev,
 /* libata-acpi.c */
 #ifdef CONFIG_SATA_ACPI
 extern int ata_acpi_exec_tfs(struct ata_port *ap);
+extern int ata_acpi_push_id(struct ata_port *ap, unsigned int ix);
 #else
 static inline int ata_acpi_exec_tfs(struct ata_port *ap)
 {
         return 0;
 }
+static inline int ata_acpi_push_id(struct ata_port *ap, unsigned int ix)
+{
+        return 0;
+}
 #endif
 
 /* libata-scsi.c */