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Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/backing_ops.c')
-rw-r--r--arch/powerpc/platforms/cell/spufs/backing_ops.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/backing_ops.c b/arch/powerpc/platforms/cell/spufs/backing_ops.c
index 07a0e815abf5..ec01214e51ee 100644
--- a/arch/powerpc/platforms/cell/spufs/backing_ops.c
+++ b/arch/powerpc/platforms/cell/spufs/backing_ops.c
@@ -162,7 +162,8 @@ static int spu_backing_wbox_write(struct spu_context *ctx, u32 data)
BUG_ON(avail != (4 - slot));
ctx->csa.spu_mailbox_data[slot] = data;
ctx->csa.spu_chnlcnt_RW[29] = ++slot;
- ctx->csa.prob.mb_stat_R = (((4 - slot) & 0xff) << 8);
+ ctx->csa.prob.mb_stat_R &= ~(0x00ff00);
+ ctx->csa.prob.mb_stat_R |= (((4 - slot) & 0xff) << 8);
gen_spu_event(ctx, MFC_SPU_MAILBOX_WRITTEN_EVENT);
ret = 4;
} else {