From 2c785c99c2af7aa1dd73c3e56fed73666d745aef Mon Sep 17 00:00:00 2001
From: Pavankumar Kondeti <quic_pkondeti@quicinc.com>
Date: Mon, 25 Oct 2021 18:24:07 +0530
Subject: [PATCH] media: uvcvideo: Use cached memory for USB transfers

Use kmalloc() + DMA streaming API instead of DMA coherent
memory. The coherent memory is uncached and results in slower
decode performance.

Change-Id: Ibb5990adc3bc319fd704534721140644d76a5787
Signed-off-by: Pavankumar Kondeti <quic_pkondeti@quicinc.com>
---
 drivers/media/usb/uvc/uvc_video.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
index ffffb66d51a0..ce64c58aceb3 100644
--- a/drivers/media/usb/uvc/uvc_video.c
+++ b/drivers/media/usb/uvc/uvc_video.c
@@ -26,6 +26,8 @@
 
 #include "uvcvideo.h"
 
+#define CONFIG_DMA_NONCOHERENT 1
+
 /* ------------------------------------------------------------------------
  * UVC Controls
  */