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>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index b63ab1570103..2141976d423c 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -2158,6 +2158,7 @@ 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 =
@@ -2233,6 +2234,7 @@ 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,