Re: [PATCH] dmaengine: ti: k3-udma: Fix delayed_work usage for tx drain workaround

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On 17/06/2020 16.55, Vinod Koul wrote:
> On 20-05-20, 14:22, Peter Ujfalusi wrote:
>> INIT_DELAYED_WORK_ONSTACK() must be used with on-stack delayed work, which
>> is not the case here.
>> Use normal delayed_work for the channels instead.
>>
>> Fixes: 25dcb5dd7b7c ("dmaengine: ti: New driver for K3 UDMA")
> 
> Is this a fix or an optimization?

It is a fix.

>> Reported-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
> 
> No sob!

Oops. I'll resend in a second

> 
>> ---
>>  drivers/dma/ti/k3-udma.c | 4 +---
>>  1 file changed, 1 insertion(+), 3 deletions(-)
>>
>> diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
>> index c91e2dc1bb72..87554e093a3b 100644
>> --- a/drivers/dma/ti/k3-udma.c
>> +++ b/drivers/dma/ti/k3-udma.c
>> @@ -1906,8 +1906,6 @@ static int udma_alloc_chan_resources(struct dma_chan *chan)
>>  
>>  	udma_reset_rings(uc);
>>  
>> -	INIT_DELAYED_WORK_ONSTACK(&uc->tx_drain.work,
>> -				  udma_check_tx_completion);
>>  	return 0;
>>  
>>  err_irq_free:
>> @@ -3019,7 +3017,6 @@ static void udma_free_chan_resources(struct dma_chan *chan)
>>  	}
>>  
>>  	cancel_delayed_work_sync(&uc->tx_drain.work);
>> -	destroy_delayed_work_on_stack(&uc->tx_drain.work);
>>  
>>  	if (uc->irq_num_ring > 0) {
>>  		free_irq(uc->irq_num_ring, uc);
>> @@ -3711,6 +3708,7 @@ static int udma_probe(struct platform_device *pdev)
>>  		tasklet_init(&uc->vc.task, udma_vchan_complete,
>>  			     (unsigned long)&uc->vc);
>>  		init_completion(&uc->teardown_completed);
>> +		INIT_DELAYED_WORK(&uc->tx_drain.work, udma_check_tx_completion);
>>  	}
>>  
>>  	ret = dma_async_device_register(&ud->ddev);
>> -- 
>> Peter
>>
>> Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
>> Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
> 

- Péter

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki





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