linux-kernel - [PATCH 2/3] rpmsg: core: make rpmsg bus DMA capable

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Message-Id: <20180302145531.20463-3-srinivas.kandagatla@linaro.org>
Date:   Fri,  2 Mar 2018 14:55:30 +0000
From:   srinivas.kandagatla@...aro.org
To:     will.deacon@....com, robin.murphy@....com,
        bjorn.andersson@...aro.org
Cc:     joro@...tes.org, ohad@...ery.com,
        linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        linux-remoteproc@...r.kernel.org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH 2/3] rpmsg: core: make rpmsg bus DMA capable

From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>

Many of the rpmsg clients like audio drivers need to allocate
dma memory. Make this bus DMA capable so that the child devices
can use dma apis.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 drivers/rpmsg/rpmsg_core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c
index e84c71f8d6ab..540a3f3567b8 100644
--- a/drivers/rpmsg/rpmsg_core.c
+++ b/drivers/rpmsg/rpmsg_core.c
@@ -472,6 +472,7 @@ struct bus_type rpmsg_bus = {
 	.uevent		= rpmsg_uevent,
 	.probe		= rpmsg_dev_probe,
 	.remove		= rpmsg_dev_remove,
+	.force_dma	= true,
 };
 EXPORT_SYMBOL(rpmsg_bus);
 
-- 
2.15.1