usb: musb: omap2+: fix context api's

RxFifoSz, TxFifoSz, RxFifoAddr, TxFifoAddr
are all indexed registers.

So before doing a context save or restore, INDEX register
should be set, then only one gets to the right register offset.

Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 920f04e..bb5ff73 100644 (file)
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -2156,6 +2156,7 @@ static void musb_save_context(struct musb *musb)
                if (!epio)
                        continue;
 
+               musb_writeb(musb_base, MUSB_INDEX, i);
                musb->context.index_regs[i].txmaxp =
                        musb_readw(epio, MUSB_TXMAXP);
                musb->context.index_regs[i].txcsr =
@@ -2231,6 +2232,7 @@ static void musb_restore_context(struct musb *musb)
                if (!epio)
                        continue;
 
+               musb_writeb(musb_base, MUSB_INDEX, i);
                musb_writew(epio, MUSB_TXMAXP,
                        musb->context.index_regs[i].txmaxp);
                musb_writew(epio, MUSB_TXCSR,