tree: https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git renesas/topic/i2c-core-dma head: 12ce22166e7da632e9467c22be6014c36afa9a9c commit: d624178d6427170c2c8cbbf92178332594580ffd [11/13] i2c: add helper to determine if DMA is favoured config: i386-randconfig-x078-06041529 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: git checkout d624178d6427170c2c8cbbf92178332594580ffd # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): In file included from drivers/i2c/i2c-core-base.c:28:0: include/linux/i2c.h: In function 'i2c_check_msg_for_dma': include/linux/i2c.h:777:36: error: implicit declaration of function 'object_is_on_stack' [-Werror=implicit-function-declaration] if (!virt_addr_valid(msg->buf) || object_is_on_stack(msg->buf)) { ^~~~~~~~~~~~~~~~~~ In file included from include/linux/perf_regs.h:4:0, from include/linux/perf_event.h:54, from include/linux/trace_events.h:9, from include/trace/trace_events.h:19, from include/trace/define_trace.h:95, from include/trace/events/i2c.h:150, from drivers/i2c/i2c-core-base.c:49: include/linux/sched/task_stack.h: At top level: >> include/linux/sched/task_stack.h:80:19: error: static declaration of 'object_is_on_stack' follows non-static declaration static inline int object_is_on_stack(void *obj) ^~~~~~~~~~~~~~~~~~ In file included from drivers/i2c/i2c-core-base.c:28:0: include/linux/i2c.h:777:36: note: previous implicit declaration of 'object_is_on_stack' was here if (!virt_addr_valid(msg->buf) || object_is_on_stack(msg->buf)) { ^~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors -- In file included from drivers//gpu/drm/i915/i915_drv.h:37:0, from drivers//gpu/drm/i915/i915_trace_points.c:8: include/linux/i2c.h: In function 'i2c_check_msg_for_dma': include/linux/i2c.h:777:36: error: implicit declaration of function 'object_is_on_stack' [-Werror=implicit-function-declaration] if (!virt_addr_valid(msg->buf) || object_is_on_stack(msg->buf)) { ^~~~~~~~~~~~~~~~~~ In file included from include/linux/perf_regs.h:4:0, from include/linux/perf_event.h:54, from include/linux/trace_events.h:9, from include/trace/trace_events.h:19, from include/trace/define_trace.h:95, from drivers//gpu/drm/i915/i915_trace.h:986, from drivers//gpu/drm/i915/i915_trace_points.c:12: include/linux/sched/task_stack.h: At top level: >> include/linux/sched/task_stack.h:80:19: error: static declaration of 'object_is_on_stack' follows non-static declaration static inline int object_is_on_stack(void *obj) ^~~~~~~~~~~~~~~~~~ In file included from drivers//gpu/drm/i915/i915_drv.h:37:0, from drivers//gpu/drm/i915/i915_trace_points.c:8: include/linux/i2c.h:777:36: note: previous implicit declaration of 'object_is_on_stack' was here if (!virt_addr_valid(msg->buf) || object_is_on_stack(msg->buf)) { ^~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/object_is_on_stack +80 include/linux/sched/task_stack.h f3ac6067 Ingo Molnar 2017-02-03 74 static inline void put_task_stack(struct task_struct *tsk) {} f3ac6067 Ingo Molnar 2017-02-03 75 #endif f3ac6067 Ingo Molnar 2017-02-03 76 f3ac6067 Ingo Molnar 2017-02-03 77 #define task_stack_end_corrupted(task) \ f3ac6067 Ingo Molnar 2017-02-03 78 (*(end_of_stack(task)) != STACK_END_MAGIC) f3ac6067 Ingo Molnar 2017-02-03 79 f3ac6067 Ingo Molnar 2017-02-03 @80 static inline int object_is_on_stack(void *obj) f3ac6067 Ingo Molnar 2017-02-03 81 { f3ac6067 Ingo Molnar 2017-02-03 82 void *stack = task_stack_page(current); f3ac6067 Ingo Molnar 2017-02-03 83 :::::: The code at line 80 was first introduced by commit :::::: f3ac60671954c8d413532627b1be13a76f394c49 sched/headers: Move task-stack related APIs from <linux/sched.h> to <linux/sched/task_stack.h> :::::: TO: Ingo Molnar <mingo@xxxxxxxxxx> :::::: CC: Ingo Molnar <mingo@xxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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