Patch 1~3 make some cleanup, and patch 4 use of_irq_get() instead of irq_of_parse_and_map() to get irq number, return -EPROBE_DEFER if the irq domain is not yet created, and move irq obtain into amba_probe, the driver defer probe will properly to handle this error. V2: - add new patch to kill irq sysfs file, suggested by Rob. - move irq obtain from amba_device_add() to amba_probe(), suggested by Saravana. (As Saravana said, it will use a new mechanism to deal with the defer probe when amba device add and drop the amba specific deferring code, see[1]) - add Rob Reviewed-by to patch 1/2, no patch4 due to patch4 is changed [1] https://lore.kernel.org/lkml/20210304195101.3843496-1-saravanak@xxxxxxxxxx/ Kefeng Wang (4): amba: Drop unused functions about APB/AHB devices add Revert "ARM: amba: make use of -1 IRQs warn" amba: Kill sysfs attribute file of irq amba: Properly handle device probe without IRQ domain drivers/amba/bus.c | 120 ++++++++++----------------------------- drivers/of/platform.c | 6 +- include/linux/amba/bus.h | 18 ------ 3 files changed, 30 insertions(+), 114 deletions(-) -- 2.18.0.huawei.25