From: Ajay Kumar Gupta <ajay.gupta@xxxxxx>
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@xxxxxx>
Signed-off-by: Babu Ravi <ravibabu@xxxxxx>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
drivers/usb/musb/musb_host.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index cf94511..e3ab40a 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -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;
--
1.6.4.2
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
