diff options
Diffstat (limited to 'drivers/base/dmapool.c')
| -rw-r--r-- | drivers/base/dmapool.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/base/dmapool.c b/drivers/base/dmapool.c index 33c5cce1560b..b2efbd4cf710 100644 --- a/drivers/base/dmapool.c +++ b/drivers/base/dmapool.c @@ -141,11 +141,20 @@ dma_pool_create (const char *name, struct device *dev, init_waitqueue_head (&retval->waitq); if (dev) { + int ret; + down (&pools_lock); if (list_empty (&dev->dma_pools)) - device_create_file (dev, &dev_attr_pools); + ret = device_create_file (dev, &dev_attr_pools); + else + ret = 0; /* note: not currently insisting "name" be unique */ - list_add (&retval->pools, &dev->dma_pools); + if (!ret) + list_add (&retval->pools, &dev->dma_pools); + else { + kfree(retval); + retval = NULL; + } up (&pools_lock); } else INIT_LIST_HEAD (&retval->pools); |