Re: [PATCH V4 05/10] dmaengine: qcom_hidma: make pending_tre_count atomic

[Sinan Kaya]

On 10/1/2016 2:19 AM, Vinod Koul wrote:
>> Making it atomic so that it can be updated from multiple contexts.
> How is it multiple contexts? It's either existing context of MSI, not both!
> 

I was trying to mean multiple processor contexts here. The driver allocates 11
MSI interrupts. Each MSI interrupt can be assigned to a different CPU. Then, 
we have a race condition for common variables as they share the same interrupt
handler with a different cause bit. 

I will put the above description into the commit text.

-- 
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.