From: Julia Lawall <julia@diku.dk>
To: Marcel Holtmann <marcel@holtmann.org>,
linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: [PATCH 9/20] drivers/bluetooth: Use kzalloc
Date: Thu, 13 May 2010 22:02:03 +0200 (CEST) [thread overview]
Message-ID: <Pine.LNX.4.64.1005132201470.6282@ask.diku.dk> (raw)
From: Julia Lawall <julia@diku.dk>
Use kzalloc rather than the combination of kmalloc and memset.
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression x,size,flags;
statement S;
@@
-x = kmalloc(size,flags);
+x = kzalloc(size,flags);
if (x == NULL) S
-memset(x, 0, size);
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
---
drivers/bluetooth/btmrvl_sdio.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff -u -p a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
--- a/drivers/bluetooth/btmrvl_sdio.c
+++ b/drivers/bluetooth/btmrvl_sdio.c
@@ -216,7 +216,7 @@ static int btmrvl_sdio_download_helper(s
tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
- tmphlprbuf = kmalloc(tmphlprbufsz, GFP_KERNEL);
+ tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
if (!tmphlprbuf) {
BT_ERR("Unable to allocate buffer for helper."
" Terminating download");
@@ -224,8 +224,6 @@ static int btmrvl_sdio_download_helper(s
goto done;
}
- memset(tmphlprbuf, 0, tmphlprbufsz);
-
helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
/* Perform helper data transfer */
@@ -318,7 +316,7 @@ static int btmrvl_sdio_download_fw_w_hel
BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
- tmpfwbuf = kmalloc(tmpfwbufsz, GFP_KERNEL);
+ tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
if (!tmpfwbuf) {
BT_ERR("Unable to allocate buffer for firmware."
" Terminating download");
@@ -326,8 +324,6 @@ static int btmrvl_sdio_download_fw_w_hel
goto done;
}
- memset(tmpfwbuf, 0, tmpfwbufsz);
-
/* Ensure aligned firmware buffer */
fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
next reply other threads:[~2010-05-13 20:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-13 20:02 Julia Lawall [this message]
2010-05-13 20:23 ` [PATCH 9/20] drivers/bluetooth: Use kzalloc Gustavo F. Padovan
2010-07-08 22:01 ` Marcel Holtmann
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