[lkml]   [2018]   [Oct]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectQuestion on FIELD_PREP() for static array
(to: get_maintainers -f include/linux/bitfield.h)


I would like to use FIELD_PREP() macro for assigning a static array,
like this:
static u32 val[2] = {FIELD_PREP(GENMASK_ULL(10, 0), 5), 0};


However the compiler complains of non-const expression:
./include/linux/bitfield.h:88:2: error: initializer element is not constant
({ \

Specifically it doesn't like the __BF_FIELD_CHECK() in FIELD_PREP().

Any ideas on compiler trickery we could do with the FIELD_PREP()
definition to avoid this issue (i.e. enforce the check but only use the
constant value)?

Thanks in advance,

 \ /
  Last update: 2018-10-10 19:17    [W:0.054 / U:0.768 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site