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

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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>
This commit is contained in:
Jeremy Kerr 2008-04-07 17:42:36 +10:00
parent 5711fe900d
commit 943906ba4b
1 changed files with 3 additions and 1 deletions
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4
arch/powerpc/platforms/cell/spufs/switch.c
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@ -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();
}