From: Julia Lawall <julia@xxxxxxx> Use kmemdup when some other buffer is immediately copied into the allocated region. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression from,to,size,flag; statement S; @@ - to = \(kmalloc\|kzalloc\)(size,flag); + to = kmemdup(from,size,flag); if (to==NULL || ...) S - memcpy(to, from, size); // </smpl> Signed-off-by: Julia Lawall <julia@xxxxxxx> --- drivers/net/usb/asix.c | 3 +-- drivers/net/usb/mcs7830.c | 4 +--- 2 files changed, 2 insertions(+), 5 deletions(-) diff -u -p a/drivers/net/usb/asix.c b/drivers/net/usb/asix.c --- a/drivers/net/usb/asix.c +++ b/drivers/net/usb/asix.c @@ -224,10 +224,9 @@ static int asix_write_cmd(struct usbnet cmd, value, index, size); if (data) { - buf = kmalloc(size, GFP_KERNEL); + buf = kmemdup(data, size, GFP_KERNEL); if (!buf) goto out; - memcpy(buf, data, size); } err = usb_control_msg( diff -u -p a/drivers/net/usb/mcs7830.c b/drivers/net/usb/mcs7830.c --- a/drivers/net/usb/mcs7830.c +++ b/drivers/net/usb/mcs7830.c @@ -142,12 +142,10 @@ static int mcs7830_set_reg(struct usbnet int ret; void *buffer; - buffer = kmalloc(size, GFP_NOIO); + buffer = kmemdup(data, size, GFP_NOIO); if (buffer == NULL) return -ENOMEM; - memcpy(buffer, data, size); - ret = usb_control_msg(xdev, usb_sndctrlpipe(xdev, 0), MCS7830_WR_BREQ, MCS7830_WR_BMREQ, 0x0000, index, buffer, size, MCS7830_CTRL_TIMEOUT); -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
