Commit dfeffa53 authored Nov 17, 2009 by Ajay Kumar Gupta Committed by Greg Kroah-Hartman Nov 30, 2009

USB: musb: fix ISOC Tx programming for CPPI DMAs



Isochronous Tx DMA is getting programmed but never getting started
for CPPI and TUSB DMAs and thus Isochronous Tx doesn't work.

Fixing it by starting DMAs using musb_h_tx_dma_start().

Signed-off-by: Swaminathan S <swami.iyer@ti.com>
Signed-off-by: Babu Ravi <ravibabu@ti.com>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent 1230435c

drivers/usb/musb/musb_host.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -1301,8 +1301,11 @@ void musb_host_tx(struct musb *musb, u8 epnum)
		return;
		} else if (usb_pipeisoc(pipe) && dma) {
		if (musb_tx_dma_program(musb->dma_controller, hw_ep, qh, urb,
		offset, length))
		offset, length)) {
		if (is_cppi_enabled() \|\| tusb_dma_omap())
		musb_h_tx_dma_start(hw_ep);
		return;
		}
		} else if (tx_csr & MUSB_TXCSR_DMAENAB) {
		DBG(1, "not complete, but DMA enabled?\n");
		return;