[POWERPC] spufs: Add SPU register lock
spu->register_lock should be held before accessing registers. Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp> Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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@ -170,9 +170,11 @@ int
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spu_irq_class_0_bottom(struct spu *spu)
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{
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unsigned long stat, mask;
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unsigned long flags;
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spu->class_0_pending = 0;
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spin_lock_irqsave(&spu->register_lock, flags);
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mask = spu_int_mask_get(spu, 0);
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stat = spu_int_stat_get(spu, 0);
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@ -188,6 +190,7 @@ spu_irq_class_0_bottom(struct spu *spu)
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__spu_trap_error(spu);
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spu_int_stat_clear(spu, 0, stat);
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spin_unlock_irqrestore(&spu->register_lock, flags);
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return (stat & 0x7) ? -EIO : 0;
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}
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