[origin tree build failure] [PATCH] USB sierra: Fix build if !CONFIG_PM

[Ingo Molnar <mingo@elte.hu>]

>       USB: support for autosuspend in sierra while online

FYI, -tip testing found a build failure with the sierra driver on 
!CONFIG_PM - fixed via the patch below.

Thanks,

	Ingo

-------------------->
>From 26f8ed899041199caa9315e057a28d10f81b5b88 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Wed, 23 Sep 2009 19:19:47 +0200
Subject: [PATCH] USB sierra: Fix build if !CONFIG_PM

This build failure:

  drivers/usb/serial/sierra.c: In function 'sierra_suspend':
  drivers/usb/serial/sierra.c:936: error: 'struct usb_device' has no member named 'auto_pm'

Triggers because the ->auto_pm functionality depends on CONFIG_PM.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 drivers/usb/serial/sierra.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index 68fa0e4..b089a70 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -912,6 +912,8 @@ static void sierra_release(struct usb_serial *serial)
 	}
 }
 
+#ifdef CONFIG_PM
+
 static void stop_read_write_urbs(struct usb_serial *serial)
 {
 	int i, j;
@@ -989,6 +991,8 @@ static int sierra_resume(struct usb_serial *serial)
 	return ec ? -EIO : 0;
 }
 
+#endif /* CONFIG_PM */
+
 static struct usb_serial_driver sierra_device = {
 	.driver = {
 		.owner =	THIS_MODULE,
@@ -1009,8 +1013,10 @@ static struct usb_serial_driver sierra_device = {
 	.tiocmset          = sierra_tiocmset,
 	.attach            = sierra_startup,
 	.release           = sierra_release,
+#ifdef CONFIG_PM
 	.suspend	   = sierra_suspend,
 	.resume		   = sierra_resume,
+#endif
 	.read_int_callback = sierra_instat_callback,
 };