diff options
| author | Kazunori Asayama <asayama@sm.sony.co.jp> | 2007-07-20 21:39:30 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@klappe.arndb.de> | 2007-07-20 21:41:47 +0200 |
| commit | 49776d30aea903fb2f9966c8e9b6f23ae5f7c937 (patch) | |
| tree | d17073772de1e741960d5f741ce57e9fb6ead5b8 /arch/powerpc/platforms/cell/spufs/switch.c | |
| parent | d1450317554d52e0e4a454806c4d05bb2a834f00 (diff) | |
[CELL] spufs: Avoid unexpectedly restaring MFC during context save
The current SPU context saving procedure in SPUFS unexpectedly
restarts MFC when halting decrementer, because MFC_CNTL[Dh] is set
without MFC_CNTL[Sm]. This bug causes, for example, saving broken DMA
queues. Here is a patch to fix the problem.
Signed-off-by: Kazunori Asayama <asayama@sm.sony.co.jp>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/switch.c')
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/switch.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/switch.c b/arch/powerpc/platforms/cell/spufs/switch.c index 9c506ba08cdc..827aada391f2 100644 --- a/arch/powerpc/platforms/cell/spufs/switch.c +++ b/arch/powerpc/platforms/cell/spufs/switch.c @@ -271,7 +271,8 @@ static inline void halt_mfc_decr(struct spu_state *csa, struct spu *spu) * Write MFC_CNTL[Dh] set to a '1' to halt * the decrementer. */ - out_be64(&priv2->mfc_control_RW, MFC_CNTL_DECREMENTER_HALTED); + out_be64(&priv2->mfc_control_RW, + MFC_CNTL_DECREMENTER_HALTED | MFC_CNTL_SUSPEND_MASK); eieio(); } |