Hello Haifeng, On Sun, Apr 17, 2022 at 06:37:44PM +0800, Haifeng wrote: > For Isochronous transfer mode, the ISO bit should be kept in CSR. > Otherwise, the DMA transfer will be terminated unexpected since > the ISO bit is missed once the last packet is a short packet. > > Signed-off-by: Haifeng Li <haifeng.li@xxxxxxxxxxxxxxxx> Looks good to me. Reviewed-by: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx> > --- > drivers/usb/musb/musb_gadget.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c > index 51274b87f46c..b99faf627dce 100644 > --- a/drivers/usb/musb/musb_gadget.c > +++ b/drivers/usb/musb/musb_gadget.c > @@ -482,7 +482,7 @@ void musb_g_tx(struct musb *musb, u8 epnum) > if (csr & MUSB_TXCSR_TXPKTRDY) > return; > > - musb_writew(epio, MUSB_TXCSR, MUSB_TXCSR_MODE > + musb_writew(epio, MUSB_TXCSR, csr | MUSB_TXCSR_MODE > | MUSB_TXCSR_TXPKTRDY); > request->zero = 0; > } > -- > 2.17.1 >
