[PATCH 13/18] fotg210-udc: pass struct device to DMA API functions
From: Christoph Hellwig <hch@lst.de>
Date: 2019-02-01 08:49:37
Also in:
alsa-devel, dmaengine, linux-fbdev, linux-iommu, linux-mips, linux-usb, lkml
Subsystem:
the rest, usb subsystem · Maintainers:
Linus Torvalds, Greg Kroah-Hartman
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> --- drivers/usb/gadget/udc/fotg210-udc.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c
index fe9cf415f2f1..cec49294bac6 100644
--- a/drivers/usb/gadget/udc/fotg210-udc.c
+++ b/drivers/usb/gadget/udc/fotg210-udc.c@@ -326,6 +326,7 @@ static void fotg210_wait_dma_done(struct fotg210_ep *ep) 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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2.20.1