[PATCH] dmaengine: dmatest: Restore "memcpy" as default mode

[PATCH] dmaengine: dmatest: Restore "memcpy" as default mode

[Eugeniy Paltsev]

Commit 0d4cb44da6ca0e8 ("dmaengine: dmatest: Add support for
scatter-gather DMA mode") changes default "dmatest" behavior by
changing default mode from "memcpy" to "scatter-gather".
Now "memcpy" gets back as default mode.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
 drivers/dma/dmatest.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 53e9728..cf76fc6 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -56,10 +56,10 @@ module_param(sg_buffers, uint, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(sg_buffers,
 		"Number of scatter gather buffers (default: 1)");
 
-static unsigned int dmatest = 1;
+static unsigned int dmatest;
 module_param(dmatest, uint, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(dmatest,
-		"dmatest 0-memcpy 1-slave_sg (default: 1)");
+		"dmatest 0-memcpy 1-slave_sg (default: 0)");
 
 static unsigned int xor_sources = 3;
 module_param(xor_sources, uint, S_IRUGO | S_IWUSR);
-- 
2.5.5

RE: [PATCH] dmaengine: dmatest: Restore "memcpy" as default mode

[Appana Durga Kedareswara Rao]

> -----Original Message-----
> From: Eugeniy Paltsev [mailto:Eugeniy.Paltsev@synopsys.com]
> Sent: Wednesday, September 14, 2016 11:11 PM
> To: dmaengine@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org; Appana Durga Kedareswara Rao
> <appanad@xilinx.com>; vinod.koul@intel.com; dan.j.williams@intel.com;
> andriy.shevchenko@linux.intel.com; linux-snps-arc@lists.infradead.org; Eugeniy
> Paltsev <Eugeniy.Paltsev@synopsys.com>
> Subject: [PATCH] dmaengine: dmatest: Restore "memcpy" as default mode
> 
> Commit 0d4cb44da6ca0e8 ("dmaengine: dmatest: Add support for scatter-
> gather DMA mode") changes default "dmatest" behavior by changing default
> mode from "memcpy" to "scatter-gather".
> Now "memcpy" gets back as default mode.
> 
> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>

Reviewed-by: Kedareswara rao Appana <appanad@xilinx.com>


Thanks,
Kedar.

> ---
>  drivers/dma/dmatest.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c index
> 53e9728..cf76fc6 100644
> --- a/drivers/dma/dmatest.c
> +++ b/drivers/dma/dmatest.c
> @@ -56,10 +56,10 @@ module_param(sg_buffers, uint, S_IRUGO | S_IWUSR);
> MODULE_PARM_DESC(sg_buffers,
>  		"Number of scatter gather buffers (default: 1)");
> 
> -static unsigned int dmatest = 1;
> +static unsigned int dmatest;
>  module_param(dmatest, uint, S_IRUGO | S_IWUSR);
> MODULE_PARM_DESC(dmatest,
> -		"dmatest 0-memcpy 1-slave_sg (default: 1)");
> +		"dmatest 0-memcpy 1-slave_sg (default: 0)");
> 
>  static unsigned int xor_sources = 3;
>  module_param(xor_sources, uint, S_IRUGO | S_IWUSR);
> --
> 2.5.5

Re: [PATCH] dmaengine: dmatest: Restore "memcpy" as default mode

[Vinod Koul]

On Wed, Sep 14, 2016 at 08:40:38PM +0300, Eugeniy Paltsev wrote:
> Commit 0d4cb44da6ca0e8 ("dmaengine: dmatest: Add support for
> scatter-gather DMA mode") changes default "dmatest" behavior by
> changing default mode from "memcpy" to "scatter-gather".
> Now "memcpy" gets back as default mode.

Applied, thanks


-- 
~Vinod

Re: [PATCH] dmaengine: dmatest: Restore "memcpy" as default mode

[Dave Jiang]

On 09/15/2016 08:48 AM, Vinod Koul wrote:
> On Wed, Sep 14, 2016 at 08:40:38PM +0300, Eugeniy Paltsev wrote:
>> Commit 0d4cb44da6ca0e8 ("dmaengine: dmatest: Add support for
>> scatter-gather DMA mode") changes default "dmatest" behavior by
>> changing default mode from "memcpy" to "scatter-gather".
>> Now "memcpy" gets back as default mode.
> 
> Applied, thanks
> 
> 

Did that go into stable? It's breaking the default expected behavior in
4.8 without the fix.

Re: [PATCH] dmaengine: dmatest: Restore "memcpy" as default mode

[Vinod Koul]

On Tue, Oct 18, 2016 at 11:14:08AM -0700, Dave Jiang wrote:
> On 09/15/2016 08:48 AM, Vinod Koul wrote:
> > On Wed, Sep 14, 2016 at 08:40:38PM +0300, Eugeniy Paltsev wrote:
> >> Commit 0d4cb44da6ca0e8 ("dmaengine: dmatest: Add support for
> >> scatter-gather DMA mode") changes default "dmatest" behavior by
> >> changing default mode from "memcpy" to "scatter-gather".
> >> Now "memcpy" gets back as default mode.
> > 
> > Applied, thanks
> 
> Did that go into stable? It's breaking the default expected behavior in
> 4.8 without the fix.

No it wasnt, and it should have...

I send to stable and lokks like it should applied on 4.7 and 4.8.
Commit 0d4cb44da6ca0e8 ("dmaengine: dmatest: Add support for scatter-gather
DMA mode") came in 4.7 IIUC..

Thanks
-- 
~Vinod