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usb: gadget: net2280: unconditionally reset dma in usb_reset

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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>
This commit is contained in:
Mian Yousaf Kaukab 2015-05-16 22:33:32 +02:00 committed by Felipe Balbi
parent e6ac4bb059
commit 3fc0a7c3d3
1 changed files with 7 additions and 1 deletions
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8
drivers/usb/gadget/udc/net2280.c
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@ -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);