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path: root/drivers/base/dmapool.c
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Diffstat (limited to 'drivers/base/dmapool.c')
-rw-r--r--drivers/base/dmapool.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/base/dmapool.c b/drivers/base/dmapool.c
index 33c5cce1560..b2efbd4cf71 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);