Bluetooth: Use kzalloc for drivers

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>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 2 insertions, 6 deletions

diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
index 182e55345d6a..dcc2a6ec23f0 100644
--- a/drivers/bluetooth/btmrvl_sdio.c
+++ b/drivers/bluetooth/btmrvl_sdio.c
@@ -217,7 +217,7 @@ static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
 
         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");
@@ -225,8 +225,6 @@ static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
                 goto done;
         }
 
-        memset(tmphlprbuf, 0, tmphlprbufsz);
-
         helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
 
         /* Perform helper data transfer */
@@ -319,7 +317,7 @@ static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
         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");
@@ -327,8 +325,6 @@ static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
                 goto done;
         }
 
-        memset(tmpfwbuf, 0, tmpfwbufsz);
-
         /* Ensure aligned firmware buffer */
         fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);