On Wed, Aug 27, 2025 at 05:39:11PM +0800, Wei Fang wrote: > We found an issue that the ENETC network port of our i.MX95 platform > (arm64) does not work based the latest linux-next tree. According to > my observation, the MSI-X interrupts statistics from > "cat /proc/interrupts" are all 0. > > root@imx95evk:~# cat /proc/interrupts | grep eth0 > 123: 0 0 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 1 Edge eth0-rxtx0 > 124: 0 0 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 2 Edge eth0-rxtx1 > 125: 0 0 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 3 Edge eth0-rxtx2 > 126: 0 0 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 4 Edge eth0-rxtx3 > 127: 0 0 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 5 Edge eth0-rxtx4 > 128: 0 0 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 6 Edge eth0-rxtx5 > > > So I reverted this patch and then the MSI-X interrupts return to normal. > > root@imx95evk:~# cat /proc/interrupts | grep eth0 > 123: 4365 0 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 1 Edge eth0-rxtx0 > 124: 0 194 0 0 0 0 ITS-PCI-MSIX-0002:00:00.0 2 Edge eth0-rxtx1 > 125: 0 0 227 0 0 0 ITS-PCI-MSIX-0002:00:00.0 3 Edge eth0-rxtx2 > 126: 0 0 0 219 0 0 ITS-PCI-MSIX-0002:00:00.0 4 Edge eth0-rxtx3 > 127: 0 0 0 0 176 0 ITS-PCI-MSIX-0002:00:00.0 5 Edge eth0-rxtx4 > 128: 0 0 0 0 0 233 ITS-PCI-MSIX-0002:00:00.0 6 Edge eth0-rxtx5 > > It looks like that this patch causes this issue, but I don't know about > the PCI MSI driver, so please help investigate this issue, thanks. > Can you try the following patch? https://lore.kernel.org/all/20250827062911.203106-1-inochiama@xxxxxxxxx/ Regards, Inochi
