On Tue, 20 Oct 2020 08:25:30 +0100, Neil Armstrong <narmstr...@baylibre.com> wrote: > > In order to reduce the kernel Image size on multi-platform distributions, > make it possible to build the Amlogic GPIO IRQ controller as a module > by switching it to a platform driver. > > The second patch removes MESON_IRQ_GPIO selection from ARCH_MESON to allow > building the driver as module. > > Neil Armstrong (2): > irqchip: irq-meson-gpio: make it possible to build as a module > arm64: meson: remove MESON_IRQ_GPIO selection > > arch/arm64/Kconfig.platforms | 1 - > drivers/irqchip/Kconfig | 5 +- > drivers/irqchip/irq-meson-gpio.c | 89 ++++++++++++++++++++------------ > 3 files changed, 59 insertions(+), 36 deletions(-)
I've tried this series on my vim3l with the this driver compiled as a module, and lost the Ethernet interface in the process, as the phy wasn't able to resolve its interrupt and things fail later on: [ 72.238291] meson8b-dwmac ff3f0000.ethernet eth1: no phy at addr -1 [ 72.238917] meson8b-dwmac ff3f0000.ethernet eth1: stmmac_open: Cannot attach to PHY (error: -19) This is a generic problem with making DT-based interrupt controllers modular when not *all* the drivers can deal with probing deferral. M. -- Without deviation from the norm, progress is not possible.