Hi Greg, The upstream patch 6c356ed ("MIPS: Lantiq: Fix cascaded IRQ setup") was NACKed by James for stable but it made it through to 4.4, 4.9 and 4.10 stable. There was some discussion around this patch but I should have been more explicit about it and should have informed you earlier. This patch is meant for a MIPS IRQ stack bug introduced in 4.11. So it is not applicable to 4.4, 4.9 and 4.10 stable. Please revert the following git IDs from stable. >From 4.4.y: 6280ac9 ("MIPS: Lantiq: Fix cascaded IRQ setup") >From 4.9.y: 362721c ("MIPS: Lantiq: Fix cascaded IRQ setup") >From 4.10.y: b576c58 ("MIPS: Lantiq: Fix cascaded IRQ setup") Regards, Amit Pundir