[PATCH] of: dma: protect list write operation by spin_lock

[Vinod Koul]

On Wed, Feb 13, 2013 at 09:48:29AM +0200, Andy Shevchenko wrote:
> On Tue, 2013-02-12 at 09:20 -0800, Vinod Koul wrote: 
> > On Tue, Jan 29, 2013 at 09:36:45AM -0600, Rob Herring wrote:
> > > >> Vinod, it's probably better to move drivers/of/dma.c to drivers/dma.
> > > >> That's been the direction we've been taking with new OF binding code. I
> > > >> must have missed that in the review.
> > > > ok, do you have any patches on your tree for this if not then I can update my tree
> > > > for this change and then we can apply changes thru slave-dma tree.
> > > 
> > > No, I don't have one prepared.
> > Okay, I have committed and pushed drivers/of/dma.c to be moved to
> > drivers/dma/of-dma.c
> What about Kconfig(s) / Makefile(s)?

Here is the complete patch in my tree
----
From: Vinod Koul <vinod.koul at intel.com>
Date: Tue, 12 Feb 2013 09:15:02 -0800
Subject: [PATCH] dmaengine: move drivers/of/dma.c -> drivers/dma/of-dma.c

as requested by Rob

Suggested-by: Rob Herring <rob.herring at calxeda.com>
Signed-off-by: Vinod Koul <vinod.koul at intel.com>
---
 drivers/dma/Kconfig                |    4 ++++
 drivers/dma/Makefile               |    2 ++
 drivers/{of/dma.c => dma/of-dma.c} |    0
 drivers/of/Makefile                |    2 +-
 4 files changed, 7 insertions(+), 1 deletions(-)
 rename drivers/{of/dma.c => dma/of-dma.c} (100%)

diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index 0b408bb..e92b5f0 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -325,6 +325,10 @@ config DMA_ENGINE
 config DMA_VIRTUAL_CHANNELS
 	tristate
 
+config DMA_OF
+	def_bool y
+	depends on OF
+
 comment "DMA Clients"
 	depends on DMA_ENGINE
 
diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile
index 7428fea..c1ed644 100644
--- a/drivers/dma/Makefile
+++ b/drivers/dma/Makefile
@@ -3,6 +3,8 @@ ccflags-$(CONFIG_DMADEVICES_VDEBUG) += -DVERBOSE_DEBUG
 
 obj-$(CONFIG_DMA_ENGINE) += dmaengine.o
 obj-$(CONFIG_DMA_VIRTUAL_CHANNELS) += virt-dma.o
+obj-$(CONFIG_DMA_OF) += of-dma.o
+
 obj-$(CONFIG_NET_DMA) += iovlock.o
 obj-$(CONFIG_INTEL_MID_DMAC) += intel_mid_dma.o
 obj-$(CONFIG_DMATEST) += dmatest.o
diff --git a/drivers/of/dma.c b/drivers/dma/of-dma.c
similarity index 100%
rename from drivers/of/dma.c
rename to drivers/dma/of-dma.c
diff --git a/drivers/of/Makefile b/drivers/of/Makefile
index eafa107..e027f44 100644
--- a/drivers/of/Makefile
+++ b/drivers/of/Makefile
@@ -1,4 +1,4 @@
-obj-y = base.o dma.o
+obj-y = base.o
 obj-$(CONFIG_OF_FLATTREE) += fdt.o
 obj-$(CONFIG_OF_PROMTREE) += pdt.o
 obj-$(CONFIG_OF_ADDRESS)  += address.o
-- 
1.7.0.4


> 
> And I think the of_dma.c looks better as a name of the file.
we have both a-b.c and a_b.c is the drivers/dma...

--
~Vinod