Messages in this thread |  | | From | Masahiro Yamada <> | Date | Sun, 8 Oct 2017 22:39:42 +0900 | Subject | Re: [PATCH] gpio: thunderx: remove unused .map() hook from irq_domain_ops |
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2017-09-22 6:54 GMT+09:00 David Daney <ddaney@caviumnetworks.com>: > On 09/13/2017 07:37 PM, Masahiro Yamada wrote: >> >> This driver implements .alloc() hook, so .map() is not used. > > > Although this comment is true for this driver, it is unclear to me if the > statement is true in the general case.
If a driver implements .alloc() hook, irq_domain_check_hierarchy() sets IRQ_DOMAIN_FLAG_HIERARCHY flag.
If you see kernel/irq/irqdomain.c, alloc/map is selected by irq_domain_is_hierarchy().
-- Best Regards Masahiro Yamada
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