Reset endpoint data toggle would lead to failure for musb
RTL version 1.9 on blackfin.
Signed-off-by: Scott Jiang <scott.jiang.linux@xxxxxxxxx>
---
drivers/usb/musb/musb_host.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index a9695f5..0bc59fd 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -590,7 +590,10 @@ musb_rx_reinit(struct musb *musb, struct musb_qh *qh, struct musb_hw_ep *ep)
WARNING("rx%d, packet/%d ready?\n", ep->epnum,
musb_readw(ep->regs, MUSB_RXCOUNT));
- musb_h_flush_rxfifo(ep, MUSB_RXCSR_CLRDATATOG);
+ if (csr & MUSB_TXCSR_MODE)
+ musb_h_flush_rxfifo(ep, MUSB_RXCSR_CLRDATATOG);
+ else
+ musb_h_flush_rxfifo(ep, 0);
}
/* target addr and (for multipoint) hub addr/port */
@@ -786,7 +789,7 @@ static void musb_ep_program(struct musb *musb, u8 epnum,
if (usb_gettoggle(urb->dev, qh->epnum, 1))
csr |= MUSB_TXCSR_H_WR_DATATOGGLE
| MUSB_TXCSR_H_DATATOGGLE;
- else
+ else if (csr & MUSB_TXCSR_MODE)
csr |= MUSB_TXCSR_CLRDATATOG;
}
--
1.7.0.4
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