[PATCH] USB: musb: fix Blackfin building after power updates

[Mike Frysinger <vapier@gentoo.org>]

From: Ian Jeffray <ian@jeffray.co.uk>

The new MUSB power code needs musb_read_txhubport() to return a value (so
stub it as 0 like the other Blackfin hub funcs).  It also needs new helper
functions for saving/restoring context, so change the apparently unused
musb_platform_{suspend,resume} to musb_platform_{save,restore}_context in
the Blackfin code.

Signed-off-by: Ian Jeffray <ian@jeffray.co.uk>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
Note: this is for 2.6.34.x and 2.6.35
Note: i believe this is what we want, but Cliff is free to correct me ;)

 drivers/usb/musb/blackfin.c  |   12 ++++++++++++
 drivers/usb/musb/musb_regs.h |    3 ++-
 2 files changed, 14 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c
index b611420..b5f1d17 100644
--- a/drivers/usb/musb/blackfin.c
+++ b/drivers/usb/musb/blackfin.c
@@ -392,6 +392,18 @@ int __init musb_platform_init(struct musb *musb, void *board_data)
 	return 0;
 }
 
+#ifdef CONFIG_PM
+void musb_platform_save_context(struct musb *musb,
+			struct musb_context_registers *musb_context)
+{
+}
+
+void musb_platform_restore_context(struct musb *musb,
+			struct musb_context_registers *musb_context)
+{
+}
+#endif
+
 int musb_platform_exit(struct musb *musb)
 {
 
diff --git a/drivers/usb/musb/musb_regs.h b/drivers/usb/musb/musb_regs.h
index 2442675..5a727c5 100644
--- a/drivers/usb/musb/musb_regs.h
+++ b/drivers/usb/musb/musb_regs.h
@@ -633,8 +633,9 @@ static inline u8  musb_read_txhubaddr(void __iomem *mbase, u8 epnum)
 	return 0;
 }
 
-static inline void  musb_read_txhubport(void __iomem *mbase, u8 epnum)
+static inline u8 musb_read_txhubport(void __iomem *mbase, u8 epnum)
 {
+	return 0;
 }
 
 #endif /* CONFIG_BLACKFIN */
-- 
1.7.1