On 01/17/2017 06:09 PM, Sergei Shtylyov wrote:
> On 01/17/2017 04:45 PM, Alexandre Bailon wrote:
>
>> Despite the driver is already using DT to get the number of channels,
>> init_sched() is using an hardcoded value to get it.
>> Use DT to get the number of channels.
>>
>> Signed-off-by: Alexandre Bailon <abailon@xxxxxxxxxxxx>
>> ---
>> drivers/dma/cppi41.c | 33 ++++++++++++++++++++-------------
>> 1 file changed, 20 insertions(+), 13 deletions(-)
>>
>> diff --git a/drivers/dma/cppi41.c b/drivers/dma/cppi41.c
>> index 3b2f57f..303ccee 100644
>> --- a/drivers/dma/cppi41.c
>> +++ b/drivers/dma/cppi41.c
> [...]
>> @@ -832,7 +829,7 @@ static int init_descs(struct device *dev, struct
>> cppi41_dd *cdd)
>> return 0;
>> }
>>
>> -static void init_sched(struct cppi41_dd *cdd)
>> +static int init_sched(struct device *dev, struct cppi41_dd *cdd)
>> {
>> unsigned ch;
>> unsigned word;
> [...]
>> @@ -850,9 +847,11 @@ static void init_sched(struct cppi41_dd *cdd)
>> cppi_writel(reg, cdd->sched_mem + DMA_SCHED_WORD(word));
>> word++;
>> }
>> - reg = 15 * 2 * 2 - 1;
>> + reg = cdd->n_chans * 2 - 1;
>> reg |= DMA_SCHED_CTRL_EN;
>> cppi_writel(reg, cdd->sched_mem + DMA_SCHED_CTRL);
>> +
>> + return 0;
>> }
>>
>> static int init_cppi41(struct device *dev, struct cppi41_dd *cdd)
>> @@ -871,12 +870,14 @@ static int init_cppi41(struct device *dev,
>> struct cppi41_dd *cdd)
>>
>> ret = init_descs(dev, cdd);
>> if (ret)
>> - goto err_td;
>> + goto deinit;
>>
>> cppi_writel(cdd->td_queue.submit, cdd->ctrl_mem + DMA_TDFDQ);
>> - init_sched(cdd);
>> + ret = init_sched(dev, cdd);
>> + if (ret)
>
> What's the point if init_sched() always returns 0?
In older version of this patch, I was able to return non zero
in case of error.
I will fix it.
Best Regards,
Alexandre
>
> [...]
>
> MBR, Sergei
>
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