linux-kernel - [PATCH 6/7 v7] bus/fsl-mc: set coherent dma mask for devices on fsl-mc bus

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Date:   Mon, 10 Sep 2018 19:19:20 +0530
From:   Nipun Gupta <nipun.gupta@....com>
To:     joro@...tes.org, robin.murphy@....com, will.deacon@....com,
        robh+dt@...nel.org, robh@...nel.org, mark.rutland@....com,
        catalin.marinas@....com, gregkh@...uxfoundation.org,
        laurentiu.tudor@....com, bhelgaas@...gle.com, hch@....de
Cc:     m.szyprowski@...sung.com, shawnguo@...nel.org,
        frowand.list@...il.com, iommu@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linuxppc-dev@...ts.ozlabs.org, linux-pci@...r.kernel.org,
        bharat.bhushan@....com, stuyoder@...il.com, leoyang.li@....com,
        Nipun Gupta <nipun.gupta@....com>
Subject: [PATCH 6/7 v7] bus/fsl-mc: set coherent dma mask for devices on fsl-mc bus

of_dma_configure() API expects coherent_dma_mask to be correctly
set in the devices. This patch does the needful.

Signed-off-by: Nipun Gupta <nipun.gupta@....com>
Reviewed-by: Robin Murphy <robin.murphy@....com>
---
 drivers/bus/fsl-mc/fsl-mc-bus.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c
index fa43c7d..624828b 100644
--- a/drivers/bus/fsl-mc/fsl-mc-bus.c
+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
@@ -627,6 +627,7 @@ int fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
 		mc_dev->icid = parent_mc_dev->icid;
 		mc_dev->dma_mask = FSL_MC_DEFAULT_DMA_MASK;
 		mc_dev->dev.dma_mask = &mc_dev->dma_mask;
+		mc_dev->dev.coherent_dma_mask = mc_dev->dma_mask;
 		dev_set_msi_domain(&mc_dev->dev,
 				   dev_get_msi_domain(&parent_mc_dev->dev));
 	}
-- 
1.9.1