fotg210-udc: pass struct device to DMA API functions (e26bdb01) · Commits · 戴 / test

The DMA API generally relies on a struct device to work properly, and only barely works without one for legacy reasons. Pass the easily available struct device from the platform_device to remedy this. Signed-off-by:

Christoph Hellwig <hch@lst.de> Signed-off-by:

Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/gadget/udc/fotg210-udc.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -326,6 +326,7 @@ dma_reset:
		static void fotg210_start_dma(struct fotg210_ep *ep,
		struct fotg210_request *req)
		{
		struct device *dev = &ep->fotg210->gadget.dev;
		dma_addr_t d;
		u8 *buffer;
		u32 length;
		@@ -348,10 +349,10 @@ static void fotg210_start_dma(struct fotg210_ep *ep,
		length = req->req.length;
		}

		d = dma_map_single(NULL, buffer, length,
		d = dma_map_single(dev, buffer, length,
		ep->dir_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);

		if (dma_mapping_error(NULL, d)) {
		if (dma_mapping_error(dev, d)) {
		pr_err("dma_mapping_error\n");
		return;
		}
		@@ -366,7 +367,7 @@ static void fotg210_start_dma(struct fotg210_ep *ep,
		/* update actual transfer length */
		req->req.actual += length;

		dma_unmap_single(NULL, d, length, DMA_TO_DEVICE);
		dma_unmap_single(dev, d, length, DMA_TO_DEVICE);
		}

		static void fotg210_ep0_queue(struct fotg210_ep *ep,

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