On 5/2/2022 3:41 AM, Manivannan Sadhasivam wrote:
The endpoint device will only read the context wp when the host rings the doorbell. And moreover the doorbell write is using writel(). This guarantess that the prior writes will be completed before ringing doorbell. So there is no need of an additional dma_wmb() to order the coherent memory writes w.r.t each other. Even if the writes gets reordered, it won't affect the endpoint device. Cc: Loic Poulain <loic.poulain@xxxxxxxxxx> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx> Reviewed by: Hemant Kumar <quic_hemantk@xxxxxxxxxxx>
