linux-kernel - [PATCH][next][V2] media: uvcvideo: remove duplicated dma

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Message-Id: <20210210191942.147083-1-colin.king@canonical.com>
Date:   Wed, 10 Feb 2021 19:19:42 +0000
From:   Colin King <colin.king@...onical.com>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Tomasz Figa <tfiga@...omium.org>,
        Ricardo Ribalda <ribalda@...omium.org>,
        linux-media@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH][next][V2] media: uvcvideo: remove duplicated dma_dev assignments

From: Colin Ian King <colin.king@...onical.com>

The assignment to dma_dev has been performed twice in one
statement. Fix this by removing the extraneous assignment.

Addresses-Coverity: ("Evaluation order violation")
Fixes: fdcd02a641e2 ("media: uvcvideo: Use dma_alloc_noncontiguos API")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---

V2:  Fix 2nd occurrence of this same issue.

---
 drivers/media/usb/uvc/uvc_video.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
index dc81f9a86eca..6f2f308d86fe 100644
--- a/drivers/media/usb/uvc/uvc_video.c
+++ b/drivers/media/usb/uvc/uvc_video.c
@@ -1105,7 +1105,7 @@ static inline struct device *stream_to_dmadev(struct uvc_streaming *stream)
 
 static void uvc_urb_dma_sync(struct uvc_urb *uvc_urb, bool for_device)
 {
-	struct device *dma_dev = dma_dev = stream_to_dmadev(uvc_urb->stream);
+	struct device *dma_dev = stream_to_dmadev(uvc_urb->stream);
 
 	if (for_device) {
 		dma_sync_sgtable_for_device(dma_dev, uvc_urb->sgt,
@@ -1586,7 +1586,7 @@ static void uvc_video_complete(struct urb *urb)
  */
 static void uvc_free_urb_buffers(struct uvc_streaming *stream)
 {
-	struct device *dma_dev = dma_dev = stream_to_dmadev(stream);
+	struct device *dma_dev = stream_to_dmadev(stream);
 	struct uvc_urb *uvc_urb;
 
 	for_each_uvc_urb(uvc_urb, stream) {
-- 
2.30.0