USB: musb: fix init oops crash with static FIFO config

Correct musb_read_fifosize() and musb_configure_ep0() functions
for the #ifndef BLACKFIN branch when the silicon uses static FIFO
configuration.  (Most current silicon configures this controller
to use dynamic FIFO configuration; some parts from ST don't, like
the STM STA2062.)

Signed-off-by: Giuseppe	GORGOGLIONE <giuseppe.gorgoglione@st.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index adf1806007ff..efb39b5e55b5 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -478,10 +478,11 @@ static inline void musb_configure_ep0(struct musb *musb)
 static inline int musb_read_fifosize(struct musb *musb,
                 struct musb_hw_ep *hw_ep, u8 epnum)
 {
+        void *mbase = musb->mregs;
         u8 reg = 0;
 
         /* read from core using indexed model */
-        reg = musb_readb(hw_ep->regs, 0x10 + MUSB_FIFOSIZE);
+        reg = musb_readb(mbase, MUSB_EP_OFFSET(epnum, MUSB_FIFOSIZE));
         /* 0's returned when no more endpoints */
         if (!reg)
                 return -ENODEV;
@@ -508,6 +509,7 @@ static inline void musb_configure_ep0(struct musb *musb)
 {
         musb->endpoints[0].max_packet_sz_tx = MUSB_EP0_FIFOSIZE;
         musb->endpoints[0].max_packet_sz_rx = MUSB_EP0_FIFOSIZE;
+        musb->endpoints[0].is_shared_fifo = true;
 }
 #endif /* CONFIG_BLACKFIN */