linux-kernel - Re: [PATCH 4.9 037/109] dmaengine: stm32-dma: Set correct args number for DMA request from DT

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Message-ID: <e400b9d7-25ac-c646-b364-78bbf3eb1944@st.com>
Date:   Thu, 7 Dec 2017 14:14:32 +0100
From:   Pierre Yves MORDRET <pierre-yves.mordret@...com>
To:     Ludovic BARRE <ludovic.barre@...com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <linux-kernel@...r.kernel.org>
CC:     <stable@...r.kernel.org>,
        Mboumba Cedric Madianga <cedric.madianga@...il.com>,
        Vinod Koul <vinod.koul@...el.com>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: Re: [PATCH 4.9 037/109] dmaengine: stm32-dma: Set correct args number
 for DMA request from DT

Hi,

I may ack this patch but what about dt-bindings and DT ?

~PYM~


On 12/07/2017 02:03 PM, Ludovic BARRE wrote:
> add Pierre-yves Mordret
> 
> acked-by: Ludovic BARRE <ludovic.barre@...com>
> 
> On 12/07/2017 01:56 PM, Greg Kroah-Hartman wrote:
>> 4.9-stable review patch.  If anyone has any objections, please let me know.
>>
>> ------------------
>>
>> From: M'boumba Cedric Madianga <cedric.madianga@...il.com>
>>
>>
>> [ Upstream commit 7e96304d99477de1f70db42035071e56439da817 ]
>>
>> This patch sets the right number of arguments to be used for DMA clients
>> which request channels from DT.
>>
>> Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@...il.com>
>> Reviewed-by: Ludovic BARRE <ludovic.barre@...com>
>> Signed-off-by: Vinod Koul <vinod.koul@...el.com>
>> Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
>> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
>> ---
>>   drivers/dma/stm32-dma.c |    7 ++-----
>>   1 file changed, 2 insertions(+), 5 deletions(-)
>>
>> --- a/drivers/dma/stm32-dma.c
>> +++ b/drivers/dma/stm32-dma.c
>> @@ -976,21 +976,18 @@ static struct dma_chan *stm32_dma_of_xla
>>   	struct stm32_dma_chan *chan;
>>   	struct dma_chan *c;
>>   
>> -	if (dma_spec->args_count < 3)
>> +	if (dma_spec->args_count < 4)
>>   		return NULL;
>>   
>>   	cfg.channel_id = dma_spec->args[0];
>>   	cfg.request_line = dma_spec->args[1];
>>   	cfg.stream_config = dma_spec->args[2];
>> -	cfg.threshold = 0;
>> +	cfg.threshold = dma_spec->args[3];
>>   
>>   	if ((cfg.channel_id >= STM32_DMA_MAX_CHANNELS) || (cfg.request_line >=
>>   				STM32_DMA_MAX_REQUEST_ID))
>>   		return NULL;
>>   
>> -	if (dma_spec->args_count > 3)
>> -		cfg.threshold = dma_spec->args[3];
>> -
>>   	chan = &dmadev->chan[cfg.channel_id];
>>   
>>   	c = dma_get_slave_channel(&chan->vchan.chan);
>>
>>