lkml.org 
[lkml]   [2017]   [Oct]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH] gpio: thunderx: remove unused .map() hook from irq_domain_ops
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

\
 
 \ /
  Last update: 2017-10-08 15:41    [W:0.060 / U:5.732 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site