usb: gadget: net2280: unconditionally reset dma in usb_reset

If ep->dma is set, abort_dma() takes care of dma clean-up. If ep->dma
is not set, unconditionally reset dma channel.

Tested-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c
index a91da3640ded..07e0dba3be07 100644
--- a/drivers/usb/gadget/udc/net2280.c
+++ b/drivers/usb/gadget/udc/net2280.c
@@ -1979,9 +1979,15 @@ static void usb_reset_338x(struct net2280 *dev)
         /* clear old dma and irq state */
         for (tmp = 0; tmp < 4; tmp++) {
                 struct net2280_ep *ep = &dev->ep[tmp + 1];
+                struct net2280_dma_regs __iomem *dma;
 
-                if (ep->dma)
+                if (ep->dma) {
                         abort_dma(ep);
+                } else {
+                        dma = &dev->dma[tmp];
+                        writel(BIT(DMA_ABORT), &dma->dmastat);
+                        writel(0, &dma->dmactl);
+                }
         }
 
         writel(~0, &dev->regs->irqstat0), writel(~0, &dev->regs->irqstat1);