diff options
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/context.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/context.c b/arch/powerpc/platforms/cell/spufs/context.c index 1758cec..903c35d 100644 --- a/arch/powerpc/platforms/cell/spufs/context.c +++ b/arch/powerpc/platforms/cell/spufs/context.c @@ -120,27 +120,29 @@ int spu_acquire_runnable(struct spu_context *ctx) ctx->spu->prio = current->prio; return 0; } + up_read(&ctx->state_sema); + + down_write(&ctx->state_sema); /* ctx is about to be freed, can't acquire any more */ if (!ctx->owner) { ret = -EINVAL; goto out; } - up_read(&ctx->state_sema); - down_write(&ctx->state_sema); if (ctx->state == SPU_STATE_SAVED) { ret = spu_activate(ctx, 0); ctx->state = SPU_STATE_RUNNABLE; } - downgrade_write(&ctx->state_sema); if (ret) goto out; + downgrade_write(&ctx->state_sema); /* On success, we return holding the lock */ + return ret; out: /* Release here, to simplify calling code. */ - up_read(&ctx->state_sema); + up_write(&ctx->state_sema); return ret; } |
