Hi Mani and Bjorn, Sorry for the late reply, we just found out some problems in the patch we are trying to upstream here, and figuring out it might not be a good idea to keep this process going, so I would drop this patch submission, and come back once we figure it out a better way. BTW, May I ask why upstream chose to flag this driver with MSI_FLAG_NO_AFFINITY and remove the function dw_pci_msi_set_affinity implementation ? Thanks