libata: add CONFIG_PM to libata core layer

Conditionalize all PM related stuff in libata core layer using
CONFIG_PM.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 29 insertions, 0 deletions

diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index cad0d6db6df..7349c3dbf77 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -52,8 +52,33 @@ enum {
 
 static void __ata_port_freeze(struct ata_port *ap);
 static void ata_eh_finish(struct ata_port *ap);
+#ifdef CONFIG_PM
 static void ata_eh_handle_port_suspend(struct ata_port *ap);
 static void ata_eh_handle_port_resume(struct ata_port *ap);
+static int ata_eh_suspend(struct ata_port *ap,
+                          struct ata_device **r_failed_dev);
+static void ata_eh_prep_resume(struct ata_port *ap);
+static int ata_eh_resume(struct ata_port *ap, struct ata_device **r_failed_dev);
+#else /* CONFIG_PM */
+static void ata_eh_handle_port_suspend(struct ata_port *ap)
+{ }
+
+static void ata_eh_handle_port_resume(struct ata_port *ap)
+{ }
+
+static int ata_eh_suspend(struct ata_port *ap, struct ata_device **r_failed_dev)
+{
+        return 0;
+}
+
+static void ata_eh_prep_resume(struct ata_port *ap)
+{ }
+
+static int ata_eh_resume(struct ata_port *ap, struct ata_device **r_failed_dev)
+{
+        return 0;
+}
+#endif /* CONFIG_PM */
 
 static void ata_ering_record(struct ata_ering *ering, int is_io,
                              unsigned int err_mask)
@@ -1790,6 +1815,7 @@ static int ata_eh_revalidate_and_attach(struct ata_port *ap,
         return rc;
 }
 
+#ifdef CONFIG_PM
 /**
  *      ata_eh_suspend - handle suspend EH action
  *      @ap: target host port
@@ -1947,6 +1973,7 @@ static int ata_eh_resume(struct ata_port *ap, struct ata_device **r_failed_dev)
         DPRINTK("EXIT\n");
         return 0;
 }
+#endif /* CONFIG_PM */
 
 static int ata_port_nr_enabled(struct ata_port *ap)
 {
@@ -2249,6 +2276,7 @@ void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
         ata_eh_finish(ap);
 }
 
+#ifdef CONFIG_PM
 /**
  *      ata_eh_handle_port_suspend - perform port suspend operation
  *      @ap: port to suspend
@@ -2364,3 +2392,4 @@ static void ata_eh_handle_port_resume(struct ata_port *ap)
         }
         spin_unlock_irqrestore(ap->lock, flags);
 }
+#endif /* CONFIG_PM */