diff options
| author | Julia Lawall <julia@diku.dk> | 2009-08-06 22:05:18 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2009-08-22 23:33:22 +0200 |
| commit | 5959809ded86e267c1a95fb44738a224c30d3434 (patch) | |
| tree | 73cbd8c5a91c34d1df743dfc15d1cf954ed8d4fe /drivers/bluetooth/btmrvl_sdio.c | |
| parent | Bluetooth: Fix incorrect alignment in Marvell BT-over-SDIO driver (diff) | |
| download | linux-5959809ded86e267c1a95fb44738a224c30d3434.tar.xz linux-5959809ded86e267c1a95fb44738a224c30d3434.zip | |
Bluetooth: Add missing kmalloc NULL tests to Marvell driver
Check that the result of kmalloc is not NULL before dereferencing it.
The patch also replaces kmalloc + memset by kzalloc.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression *x;
identifier f;
constant char *C;
@@
x = \(kmalloc\|kcalloc\|kzalloc\)(...);
... when != x == NULL
when != x != NULL
when != (x || ...)
(
kfree(x)
|
f(...,C,...,x,...)
|
*f(...,x,...)
|
*x->f
)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth/btmrvl_sdio.c')
| -rw-r--r-- | drivers/bluetooth/btmrvl_sdio.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c index 1cfa8b4ace50..5b33b85790f2 100644 --- a/drivers/bluetooth/btmrvl_sdio.c +++ b/drivers/bluetooth/btmrvl_sdio.c @@ -777,8 +777,9 @@ static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv, buf = payload; if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) { tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN); - tmpbuf = kmalloc(tmpbufsz, GFP_KERNEL); - memset(tmpbuf, 0, tmpbufsz); + tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL); + if (!tmpbuf) + return -ENOMEM; buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN); memcpy(buf, payload, nb); } |