linux-kernel - [PATCH 12/18] fotg210-udc: remove a bogus dma_sync_single_for

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Message-Id: <20190201084801.10983-13-hch@lst.de>
Date:   Fri,  1 Feb 2019 09:47:55 +0100
From:   Christoph Hellwig <hch@....de>
To:     John Crispin <john@...ozen.org>, Vinod Koul <vkoul@...nel.org>,
        Dmitry Tarnyagin <dmitry.tarnyagin@...kless.no>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Sudip Mukherjee <sudipm.mukherjee@...il.com>,
        Felipe Balbi <balbi@...nel.org>, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org,
        netdev@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-fbdev@...r.kernel.org, alsa-devel@...a-project.org
Cc:     iommu@...ts.linux-foundation.org
Subject: [PATCH 12/18] fotg210-udc: remove a bogus dma_sync_single_for_device call

dma_map_single already transfers ownership to the device.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 drivers/usb/gadget/udc/fotg210-udc.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c
index bc6abaea907d..fe9cf415f2f1 100644
--- a/drivers/usb/gadget/udc/fotg210-udc.c
+++ b/drivers/usb/gadget/udc/fotg210-udc.c
@@ -356,10 +356,6 @@ static void fotg210_start_dma(struct fotg210_ep *ep,
 		return;
 	}
 
-	dma_sync_single_for_device(NULL, d, length,
-				   ep->dir_in ? DMA_TO_DEVICE :
-					DMA_FROM_DEVICE);
-
 	fotg210_enable_dma(ep, d, length);
 
 	/* check if dma is done */
-- 
2.20.1