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Message-ID: <20060913183904.578d8a6f@gondolin.boeblingen.de.ibm.com>
Date: Wed, 13 Sep 2006 18:39:04 +0200
From: Cornelia Huck <cornelia.huck@...ibm.com>
To: Greg K-H <greg@...ah.com>
Cc: linux-kernel <linux-kernel@...r.kernel.org>
Subject: [11/12] driver core fixes: device_create_file() retval check in
dmapool.c
From: Cornelia Huck <cornelia.huck@...ibm.com>
Check for device_create_file() return value in dma_pool_create().
Signed-off-by: Cornelia Huck <cornelia.huck@...ibm.com>
dmapool.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
--- linux-2.6.18-rc6/drivers/base/dmapool.c 2006-09-13 10:55:47.000000000 +0200
+++ linux-2.6.18-rc6+CH/drivers/base/dmapool.c 2006-09-13 10:55:03.000000000 +0200
@@ -141,11 +141,20 @@ dma_pool_create (const char *name, struc
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);
-
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