diff options
Diffstat (limited to 'drivers/usb/musb/musb_gadget.c')
-rw-r--r-- | drivers/usb/musb/musb_gadget.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index 0a50a35e1853..6aeb363e63e7 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c | |||
@@ -1524,6 +1524,12 @@ static void musb_gadget_fifo_flush(struct usb_ep *ep) | |||
1524 | csr = musb_readw(epio, MUSB_TXCSR); | 1524 | csr = musb_readw(epio, MUSB_TXCSR); |
1525 | if (csr & MUSB_TXCSR_FIFONOTEMPTY) { | 1525 | if (csr & MUSB_TXCSR_FIFONOTEMPTY) { |
1526 | csr |= MUSB_TXCSR_FLUSHFIFO | MUSB_TXCSR_P_WZC_BITS; | 1526 | csr |= MUSB_TXCSR_FLUSHFIFO | MUSB_TXCSR_P_WZC_BITS; |
1527 | /* | ||
1528 | * Setting both TXPKTRDY and FLUSHFIFO makes controller | ||
1529 | * to interrupt current FIFO loading, but not flushing | ||
1530 | * the already loaded ones. | ||
1531 | */ | ||
1532 | csr &= ~MUSB_TXCSR_TXPKTRDY; | ||
1527 | musb_writew(epio, MUSB_TXCSR, csr); | 1533 | musb_writew(epio, MUSB_TXCSR, csr); |
1528 | /* REVISIT may be inappropriate w/o FIFONOTEMPTY ... */ | 1534 | /* REVISIT may be inappropriate w/o FIFONOTEMPTY ... */ |
1529 | musb_writew(epio, MUSB_TXCSR, csr); | 1535 | musb_writew(epio, MUSB_TXCSR, csr); |