From 3fc0a7c3d3539a4e57b249d1fb5b2ab80c075174 Mon Sep 17 00:00:00 2001 From: Mian Yousaf Kaukab Date: Sat, 16 May 2015 22:33:32 +0200 Subject: [PATCH] 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 Signed-off-by: Mian Yousaf Kaukab Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc/net2280.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) 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); -- 2.20.1