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Commit 3650cfe2 authored by Ishizaki Kou's avatar Ishizaki Kou Committed by Paul Mackerras
Browse files

[POWERPC] spufs: Add SPU register lock 



spu->register_lock should be held before accessing registers.

Signed-off-by: default avatarKou Ishizaki <kou.ishizaki@toshiba.co.jp>
Acked-by: default avatarArnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent c5365313

arch/powerpc/platforms/cell/spu_base.c

+3 −0
Original line number Diff line number Diff line
@@ -170,9 +170,11 @@ int 
spu_irq_class_0_bottom(struct spu *spu)

{

	unsigned long stat, mask;

	unsigned long flags;



	spu->class_0_pending = 0;



	spin_lock_irqsave(&spu->register_lock, flags);

	mask = spu_int_mask_get(spu, 0);

	stat = spu_int_stat_get(spu, 0);
@@ -188,6 +190,7 @@ spu_irq_class_0_bottom(struct spu *spu) 
		__spu_trap_error(spu);



	spu_int_stat_clear(spu, 0, stat);

	spin_unlock_irqrestore(&spu->register_lock, flags);



	return (stat & 0x7) ? -EIO : 0;

}