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i387: fix sense of sanity check

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commit c38e234562 upstream.

The check for save_init_fpu() (introduced in commit 5b1cbac377: "i387:
make irq_fpu_usable() tests more robust") was the wrong way around, but
I hadn't noticed, because my "tests" were bogus: the FPU exceptions are
disabled by default, so even doing a divide by zero never actually
triggers this code at all unless you do extra work to enable them.

So if anybody did enable them, they'd get one spurious warning.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Linus Torvalds
2012-02-15 08:05:18 -08:00
committed by Greg Kroah-Hartman
parent 00717d1f23
commit 09ffc93a8a
1 changed files with 1 additions and 1 deletions
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2
arch/x86/include/asm/i387.h
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@@ -404,7 +404,7 @@ static inline void irq_ts_restore(int TS_state)
*/
static inline void save_init_fpu(struct task_struct *tsk)
{
WARN_ON_ONCE(task_thread_info(tsk)->status & TS_USEDFPU);
WARN_ON_ONCE(!(task_thread_info(tsk)->status & TS_USEDFPU));
preempt_disable();
__save_init_fpu(tsk);
stts();