[POWERPC] spufs: Return correct event for data storage interrupt

When we attempt an MFC DMA to an unmapped address, the event
returned from spu_run should be SPE_EVENT_SPE_DATA_STORAGE,
not SPE_EVENT_INVALID_DMA.

Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/platforms/cell/spu_base.c

@@ -507,7 +507,7 @@ int spu_irq_class_1_bottom(struct spu *spu)
 	if (!error) {
 		spu_restart_dma(spu);
 	} else {
-		__spu_trap_invalid_dma(spu);
+		spu->dma_callback(spu, SPE_EVENT_SPE_DATA_STORAGE);
 	}
 	return ret;
 }

arch/powerpc/platforms/cell/spufs/run.c

@@ -26,6 +26,7 @@ void spufs_dma_callback(struct spu *spu, int type)
 	} else {
 		switch (type) {
 		case SPE_EVENT_DMA_ALIGNMENT:
+		case SPE_EVENT_SPE_DATA_STORAGE:
 		case SPE_EVENT_INVALID_DMA:
 			force_sig(SIGBUS, /* info, */ current);
 			break;