From: Benedikt Spranger <b.spranger@linutronix.de>
Date: Tue, 13 Aug 2013 09:08:38 +0000 (+0200)
Subject: mfd: core: Copy DMA mask and params from parent
X-Git-Tag: next-20130822~53^2^2~10
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b018e1361bad361b47294fd09ae1f33f707dd933;p=karo-tx-linux.git

mfd: core: Copy DMA mask and params from parent

The child device intends to perform DMA operations then it needs a dma
mask and params set. This patches copies them from the parent device.

Signed-off-by: Benedikt Spranger <b.spranger@linutronix.de>
Signed-off-by: Holger Dengler <dengler@linutronix.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---

diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
index 7604f4e5df40..f421586f29fb 100644
--- a/drivers/mfd/mfd-core.c
+++ b/drivers/mfd/mfd-core.c
@@ -96,6 +96,8 @@ static int mfd_add_device(struct device *parent, int id,
 
 	pdev->dev.parent = parent;
 	pdev->dev.type = &mfd_dev_type;
+	pdev->dev.dma_mask = parent->dma_mask;
+	pdev->dev.dma_parms = parent->dma_parms;
 
 	if (parent->of_node && cell->of_compatible) {
 		for_each_child_of_node(parent->of_node, np) {