Subject: Re: linux-next: Tree for Nov 24 (drivers/mux/mmio.c)

From: Randy Dunlap <[email-masked]>
Date: Fri, 24 Nov 2023 08:29:39 -0800

On 11/23/23 18:35, Stephen Rothwell wrote:
> Hi all,
> 
> Changes since 20231123:
> 
> Non-merge commits (relative to Linus' tree): 2415
>  3096 files changed, 138691 insertions(+), 92122 deletions(-)
> 
> ----------------------------------------------------------------------------

on S390, when CONFIG_REGMAP and none of its subordinate
configs is set:

../drivers/mux/mmio.c: In function 'mux_mmio_probe':
../drivers/mux/mmio.c:76:34: error: storage size of 'field' isn't known
   76 |                 struct reg_field field;
      |                                  ^~~~~
In file included from ../include/linux/bits.h:21,
                 from ../include/linux/bitops.h:6,
                 from ../drivers/mux/mmio.c:8:
../include/linux/bits.h:23:28: error: first argument to '__builtin_choose_expr' not a constant
   23 |         (BUILD_BUG_ON_ZERO(__builtin_choose_expr( \
      |                            ^~~~~~~~~~~~~~~~~~~~~
../include/linux/build_bug.h:16:62: note: in definition of macro 'BUILD_BUG_ON_ZERO'
   16 | #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); })))
      |                                                              ^
../include/linux/bits.h:37:10: note: in expansion of macro 'GENMASK_INPUT_CHECK'
   37 |         (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
      |          ^~~~~~~~~~~~~~~~~~~
../drivers/mux/mmio.c:96:29: note: in expansion of macro 'GENMASK'
   96 |                 if (mask != GENMASK(field.msb, field.lsb)) {
      |                             ^~~~~~~
../include/linux/build_bug.h:16:51: error: bit-field '<anonymous>' width not an integer constant
   16 | #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); })))
      |                                                   ^
../include/linux/bits.h:23:10: note: in expansion of macro 'BUILD_BUG_ON_ZERO'
   23 |         (BUILD_BUG_ON_ZERO(__builtin_choose_expr( \
      |          ^~~~~~~~~~~~~~~~~
../include/linux/bits.h:37:10: note: in expansion of macro 'GENMASK_INPUT_CHECK'
   37 |         (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l))
      |          ^~~~~~~~~~~~~~~~~~~
../drivers/mux/mmio.c:96:29: note: in expansion of macro 'GENMASK'
   96 |                 if (mask != GENMASK(field.msb, field.lsb)) {
      |                             ^~~~~~~
../drivers/mux/mmio.c:102:29: error: implicit declaration of function 'devm_regmap_field_alloc' [-Werror=implicit-function-declaration]
  102 |                 fields[i] = devm_regmap_field_alloc(dev, regmap, field);
      |                             ^~~~~~~~~~~~~~~~~~~~~~~
../drivers/mux/mmio.c:76:34: warning: unused variable 'field' [-Wunused-variable]
   76 |                 struct reg_field field;
      |                                  ^~~~~
cc1: some warnings being treated as errors

Full randconfig file is attached.

-- 
~Randy