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| author | Ishizaki Kou <kou.ishizaki@toshiba.co.jp> | 2007-01-12 09:52:41 +0900 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-01-24 21:13:59 +1100 |
| commit | 3650cfe2e51432030e469afd75a429c199c4e42f (patch) | |
| tree | 7d7d94ff4afa30ef71b45eb7808f3c61e8993f9b /arch | |
| parent | c53653130f2868e44c6e8346d110d27d39e7d07b (diff) | |
| download | linux-stable-3650cfe2e51432030e469afd75a429c199c4e42f.tar.gz linux-stable-3650cfe2e51432030e469afd75a429c199c4e42f.tar.bz2 linux-stable-3650cfe2e51432030e469afd75a429c199c4e42f.zip | |
[POWERPC] spufs: Add SPU register lock
spu->register_lock should be held before accessing registers.
Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/platforms/cell/spu_base.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c index bd7bffc3ddd0..c43999a10deb 100644 --- a/arch/powerpc/platforms/cell/spu_base.c +++ b/arch/powerpc/platforms/cell/spu_base.c @@ -170,9 +170,11 @@ int spu_irq_class_0_bottom(struct spu *spu) { unsigned long stat, mask; + unsigned long flags; spu->class_0_pending = 0; + spin_lock_irqsave(&spu->register_lock, flags); mask = spu_int_mask_get(spu, 0); stat = spu_int_stat_get(spu, 0); @@ -188,6 +190,7 @@ spu_irq_class_0_bottom(struct spu *spu) __spu_trap_error(spu); spu_int_stat_clear(spu, 0, stat); + spin_unlock_irqrestore(&spu->register_lock, flags); return (stat & 0x7) ? -EIO : 0; } |