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mn10300: fix build error of missing fpu_save()

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When CONFIG_FPU is not enabled on arch/mn10300, <asm/switch_to.h> causes
a build error with a call to fpu_save():

  kernel/built-in.o: In function `.L410':
  core.c:(.sched.text+0x28a): undefined reference to `fpu_save'

Fix this by including <asm/fpu.h> in <asm/switch_to.h> so that an empty
static inline fpu_save() is defined.

Link: http://lkml.kernel.org/r/dc421c4f-4842-4429-1b99-92865c2f24b6@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Randy Dunlap 2017-01-24 15:18:49 -08:00 committed by Linus Torvalds
parent f598f82e20
commit 3705ccfdd1
1 changed files with 1 additions and 1 deletions
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2
arch/mn10300/include/asm/switch_to.h
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@ -16,7 +16,7 @@
struct task_struct; struct task_struct;
struct thread_struct; struct thread_struct;
#if !defined(CONFIG_LAZY_SAVE_FPU) #if defined(CONFIG_FPU) && !defined(CONFIG_LAZY_SAVE_FPU)
struct fpu_state_struct; struct fpu_state_struct;
extern asmlinkage void fpu_save(struct fpu_state_struct *); extern asmlinkage void fpu_save(struct fpu_state_struct *);
#define switch_fpu(prev, next) \ #define switch_fpu(prev, next) \