sh: Need IRQs enabled for init_fpu().
This tosses in a local_irq_enable()/disable() pair around the init_fpu() callsite in the FPU state restore exception handler. Fixes up a slab BUG triggered by making a slab cache allocation that can sleep whilst irqs_disabled(). This follows the behaviour undertaken by the x86 implementation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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@ -56,6 +56,7 @@ void fpu_state_restore(struct pt_regs *regs)
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}
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if (!tsk_used_math(tsk)) {
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local_irq_enable();
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/*
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* does a slab alloc which can sleep
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*/
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@ -66,6 +67,7 @@ void fpu_state_restore(struct pt_regs *regs)
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do_group_exit(SIGKILL);
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return;
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}
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local_irq_disable();
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}
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grab_fpu(regs);
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