[POWERPC] spufs: don't touch suspend bits when purging DMA queue



When we issue a MFC purge request, we may inadvertantly clear the
suspended status.

This change adds the MFC_CNTL_SUSPEND_MASK when we issue a purge
request, so that the suspend bit is masked out.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

parent 5711fe90

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

+3 −1

Original line number	Diff line number	Diff line
		@@ -462,7 +462,9 @@ static inline void purge_mfc_queue(struct spu_state csa, struct spu spu)
		* Restore, Step 14.
		* Write MFC_CNTL[Pc]=1 (purge queue).
		*/
		out_be64(&priv2->mfc_control_RW, MFC_CNTL_PURGE_DMA_REQUEST);
		out_be64(&priv2->mfc_control_RW,
		MFC_CNTL_PURGE_DMA_REQUEST \|
		MFC_CNTL_SUSPEND_MASK);
		eieio();
		}