26 Aug
2014
26 Aug
'14
10:04 p.m.
Hi, L4 hackers
I am implementing a driver using GPIO input as interrupt. When setup handler for gpio, either from "irq_set_chained_handler()" or "requst_irq()" in kernel driver, it finally calls "l4lx_irq_io_startup()" function and return "/l4x-irq: Failed to set type for IRQ x".// / What this error means?
Right before this error, it called l4_icu_set_mode() which goes to l4 side, I tried to print out debug information in l4 side, but not very successful.
I tried read document about ICU and IRQ handling library about L4Re, but did not find the answer, maybe I overlook it. So I ask help here. Is there an guidance about this interrupt things or could some one please give me some advice.
Best Regards, -Yunchuan