* [patch 23/26] mn10300: fix build error of missing fpu_save()
@ 2017-01-24 23:18 akpm
0 siblings, 0 replies; only message in thread
From: akpm @ 2017-01-24 23:18 UTC (permalink / raw)
To: torvalds, mm-commits, akpm, rdunlap, dhowells, fengguang.wu
From: Randy Dunlap <rdunlap@infradead.org>
Subject: mn10300: fix build error of missing fpu_save()
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>
---
arch/mn10300/include/asm/switch_to.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN arch/mn10300/include/asm/switch_to.h~mn10300-fix-build-error-of-missing-fpu_save arch/mn10300/include/asm/switch_to.h
--- a/arch/mn10300/include/asm/switch_to.h~mn10300-fix-build-error-of-missing-fpu_save
+++ a/arch/mn10300/include/asm/switch_to.h
@@ -16,7 +16,7 @@
struct task_struct;
struct thread_struct;
-#if !defined(CONFIG_LAZY_SAVE_FPU)
+#if defined(CONFIG_FPU) && !defined(CONFIG_LAZY_SAVE_FPU)
struct fpu_state_struct;
extern asmlinkage void fpu_save(struct fpu_state_struct *);
#define switch_fpu(prev, next) \
_
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2017-01-24 23:18 [patch 23/26] mn10300: fix build error of missing fpu_save() akpm
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