Re: [PATCH v2] staging: octeon: remove SPI, POW, PKO, and Helper typedef enums
From: kernel test robot
Date: Sat Apr 18 2026 - 10:43:23 EST
Hi Maxwell,
kernel test robot noticed the following build warnings:
[auto build test WARNING on staging/staging-testing]
url: https://github.com/intel-lab-lkp/linux/commits/Maxwell-Doose/staging-octeon-remove-SPI-POW-PKO-and-Helper-typedef-enums/20260417-103458
base: staging/staging-testing
patch link: https://lore.kernel.org/r/20260415122939.77847-1-m32285159%40gmail.com
patch subject: [PATCH v2] staging: octeon: remove SPI, POW, PKO, and Helper typedef enums
config: sparc64-allmodconfig (https://download.01.org/0day-ci/archive/20260418/202604182238.w0EH6tRa-lkp@xxxxxxxxx/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 5bac06718f502014fade905512f1d26d578a18f3)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260418/202604182238.w0EH6tRa-lkp@xxxxxxxxx/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604182238.w0EH6tRa-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
In file included from drivers/staging/octeon/ethernet.c:23:
In file included from drivers/staging/octeon/octeon-ethernet.h:41:
drivers/staging/octeon/octeon-stubs.h:1270:49: error: incomplete result type 'struct cvmx_helper_interface_mode' in function definition
1270 | static inline struct cvmx_helper_interface_mode cvmx_helper_interface_get_mode(int
| ^
drivers/staging/octeon/octeon-stubs.h:1270:22: note: forward declaration of 'struct cvmx_helper_interface_mode'
1270 | static inline struct cvmx_helper_interface_mode cvmx_helper_interface_get_mode(int
| ^
drivers/staging/octeon/octeon-stubs.h:1273:9: error: returning 'int' from a function with incompatible result type 'struct cvmx_helper_interface_mode'
1273 | return 0;
| ^
In file included from drivers/staging/octeon/ethernet.c:28:
In file included from drivers/staging/octeon/ethernet-mdio.h:20:
In file included from include/net/xfrm.h:20:
In file included from include/net/sock.h:60:
>> include/linux/poll.h:134:27: warning: division by zero is undefined [-Wdivision-by-zero]
134 | M(RDNORM) | M(RDBAND) | M(WRNORM) | M(WRBAND) |
| ^~~~~~~~~
include/linux/poll.h:132:32: note: expanded from macro 'M'
132 | #define M(X) (__force __poll_t)__MAP(val, POLL##X, (__force __u16)EPOLL##X)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/poll.h:118:51: note: expanded from macro '__MAP'
118 | (from < to ? (v & from) * (to/from) : (v & from) / (from/to))
| ^ ~~~~~~~~~
include/linux/poll.h:134:39: warning: division by zero is undefined [-Wdivision-by-zero]
134 | M(RDNORM) | M(RDBAND) | M(WRNORM) | M(WRBAND) |
| ^~~~~~~~~
include/linux/poll.h:132:32: note: expanded from macro 'M'
132 | #define M(X) (__force __poll_t)__MAP(val, POLL##X, (__force __u16)EPOLL##X)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/poll.h:118:51: note: expanded from macro '__MAP'
118 | (from < to ? (v & from) * (to/from) : (v & from) / (from/to))
| ^ ~~~~~~~~~
include/linux/poll.h:135:12: warning: division by zero is undefined [-Wdivision-by-zero]
135 | M(HUP) | M(RDHUP) | M(MSG);
| ^~~~~~~~
include/linux/poll.h:132:32: note: expanded from macro 'M'
132 | #define M(X) (__force __poll_t)__MAP(val, POLL##X, (__force __u16)EPOLL##X)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/poll.h:118:51: note: expanded from macro '__MAP'
118 | (from < to ? (v & from) * (to/from) : (v & from) / (from/to))
| ^ ~~~~~~~~~
include/linux/poll.h:135:23: warning: division by zero is undefined [-Wdivision-by-zero]
135 | M(HUP) | M(RDHUP) | M(MSG);
| ^~~~~~
include/linux/poll.h:132:32: note: expanded from macro 'M'
132 | #define M(X) (__force __poll_t)__MAP(val, POLL##X, (__force __u16)EPOLL##X)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/poll.h:118:51: note: expanded from macro '__MAP'
118 | (from < to ? (v & from) * (to/from) : (v & from) / (from/to))
| ^ ~~~~~~~~~
4 warnings and 2 errors generated.
--
In file included from ethernet.c:23:
In file included from ./octeon-ethernet.h:41:
./octeon-stubs.h:1270:49: error: incomplete result type 'struct cvmx_helper_interface_mode' in function definition
1270 | static inline struct cvmx_helper_interface_mode cvmx_helper_interface_get_mode(int
| ^
./octeon-stubs.h:1270:22: note: forward declaration of 'struct cvmx_helper_interface_mode'
1270 | static inline struct cvmx_helper_interface_mode cvmx_helper_interface_get_mode(int
| ^
./octeon-stubs.h:1273:9: error: returning 'int' from a function with incompatible result type 'struct cvmx_helper_interface_mode'
1273 | return 0;
| ^
In file included from ethernet.c:28:
In file included from ./ethernet-mdio.h:20:
In file included from include/net/xfrm.h:20:
In file included from include/net/sock.h:60:
>> include/linux/poll.h:134:27: warning: division by zero is undefined [-Wdivision-by-zero]
134 | M(RDNORM) | M(RDBAND) | M(WRNORM) | M(WRBAND) |
| ^~~~~~~~~
include/linux/poll.h:132:32: note: expanded from macro 'M'
132 | #define M(X) (__force __poll_t)__MAP(val, POLL##X, (__force __u16)EPOLL##X)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/poll.h:118:51: note: expanded from macro '__MAP'
118 | (from < to ? (v & from) * (to/from) : (v & from) / (from/to))
| ^ ~~~~~~~~~
include/linux/poll.h:134:39: warning: division by zero is undefined [-Wdivision-by-zero]
134 | M(RDNORM) | M(RDBAND) | M(WRNORM) | M(WRBAND) |
| ^~~~~~~~~
include/linux/poll.h:132:32: note: expanded from macro 'M'
132 | #define M(X) (__force __poll_t)__MAP(val, POLL##X, (__force __u16)EPOLL##X)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/poll.h:118:51: note: expanded from macro '__MAP'
118 | (from < to ? (v & from) * (to/from) : (v & from) / (from/to))
| ^ ~~~~~~~~~
include/linux/poll.h:135:12: warning: division by zero is undefined [-Wdivision-by-zero]
135 | M(HUP) | M(RDHUP) | M(MSG);
| ^~~~~~~~
include/linux/poll.h:132:32: note: expanded from macro 'M'
132 | #define M(X) (__force __poll_t)__MAP(val, POLL##X, (__force __u16)EPOLL##X)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/poll.h:118:51: note: expanded from macro '__MAP'
118 | (from < to ? (v & from) * (to/from) : (v & from) / (from/to))
| ^ ~~~~~~~~~
include/linux/poll.h:135:23: warning: division by zero is undefined [-Wdivision-by-zero]
135 | M(HUP) | M(RDHUP) | M(MSG);
| ^~~~~~
include/linux/poll.h:132:32: note: expanded from macro 'M'
132 | #define M(X) (__force __poll_t)__MAP(val, POLL##X, (__force __u16)EPOLL##X)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/poll.h:118:51: note: expanded from macro '__MAP'
118 | (from < to ? (v & from) * (to/from) : (v & from) / (from/to))
| ^ ~~~~~~~~~
4 warnings and 2 errors generated.
vim +134 include/linux/poll.h
7a163b2195cda0 Al Viro 2018-02-01 129
7a163b2195cda0 Al Viro 2018-02-01 130 static inline __poll_t demangle_poll(u16 val)
7a163b2195cda0 Al Viro 2018-02-01 131 {
7a163b2195cda0 Al Viro 2018-02-01 132 #define M(X) (__force __poll_t)__MAP(val, POLL##X, (__force __u16)EPOLL##X)
7a163b2195cda0 Al Viro 2018-02-01 133 return M(IN) | M(OUT) | M(PRI) | M(ERR) | M(NVAL) |
7a163b2195cda0 Al Viro 2018-02-01 @134 M(RDNORM) | M(RDBAND) | M(WRNORM) | M(WRBAND) |
7a163b2195cda0 Al Viro 2018-02-01 135 M(HUP) | M(RDHUP) | M(MSG);
7a163b2195cda0 Al Viro 2018-02-01 136 #undef M
7a163b2195cda0 Al Viro 2018-02-01 137 }
7a163b2195cda0 Al Viro 2018-02-01 138 #undef __MAP
7a163b2195cda0 Al Viro 2018-02-01 139
7a163b2195cda0 Al Viro 2018-02-01 140
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki