This is another respin of the initial version posted at [1] (the cover letter describes the rational for doing this). Jon, Thierry: I still haven't applied your TB tags as the series has changed significantly again. Please let me know if they are still valid. If everybody is OK with this, I'll stick it in irq/irqchip-next. * From v2 [2]: - Made the hierarchy trimming an internal functionnality, not requiring any intervention from driver code - Spelling fixes * From v1 [1]: - Moved the hierarchy trimming part to its own patch, living in irqdomain.c - Reduced the PMC irqchip patch to the bare minimal in order to reduce the risk of merge conflicts [1] https://lore.kernel.org/r/20201005111443.1390096-1-maz@xxxxxxxxxx [2] https://lore.kernel.org/r/20201006101137.1393797-1-maz@xxxxxxxxxx Marc Zyngier (4): genirq/irqdomain: Allow partial trimming of irq_data hierarchy gpio: tegra186: Allow optional irq parent callbacks soc/tegra: pmc: Allow optional irq parent callbacks soc/tegra: pmc: Don't create fake interrupt hierarchy levels drivers/gpio/gpio-tegra186.c | 15 ++++++- drivers/soc/tegra/pmc.c | 86 ++++++++++++++---------------------- kernel/irq/irqdomain.c | 58 +++++++++++++++++++++--- 3 files changed, 97 insertions(+), 62 deletions(-) -- 2.28.0