libata-core.c compile warnings with !CONFIG_PM

[Gabriel C]

Hi , 

I see this warnings on current git head with !CONFIG_PM :

...

drivers/ata/libata-core.c:768: warning: 'ata_lpm_enable' defined but not used
drivers/ata/libata-core.c:784: warning: 'ata_lpm_disable' defined but not used

...

So far I see ata_lpm_enable() is only used in ata_host_suspend(), ata_lpm_disable() only
in ata_host_resume() which have already #ifdef CONFIG_PM around.

Possible fix is to do the same for ata_lpm_enable() , ata_lpm_disable() and for ata_dev_disable_pm()
which is only used in ata_lpm_enable()


Signed-off-by: Gabriel Craciunescu <nix.or.die@xxxxxxxxxxxxxx>

---

 drivers/ata/libata-core.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 63035d7..7c78810 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -747,6 +747,7 @@ enable_pm_out:
  *	Locking: Caller.
  *	Returns: void
  */
+#ifdef CONFIG_PM
 static void ata_dev_disable_pm(struct ata_device *dev)
 {
 	struct ata_port *ap = dev->link->ap;
@@ -755,6 +756,7 @@ static void ata_dev_disable_pm(struct ata_device *dev)
 	if (ap->ops->disable_pm)
 		ap->ops->disable_pm(ap);
 }
+#endif
 
 void ata_lpm_schedule(struct ata_port *ap, enum link_pm policy)
 {
@@ -764,6 +766,7 @@ void ata_lpm_schedule(struct ata_port *ap, enum link_pm policy)
 	ata_port_schedule_eh(ap);
 }
 
+#ifdef CONFIG_PM
 static void ata_lpm_enable(struct ata_host *host)
 {
 	struct ata_link *link;
@@ -789,7 +792,7 @@ static void ata_lpm_disable(struct ata_host *host)
 		ata_lpm_schedule(ap, ap->pm_policy);
 	}
 }
-
+#endif
 
 /**
  *	ata_devchk - PATA device presence detection



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