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. -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
