From 175c04414106c34f0130d8d3bf152825b4829ceb Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sat, 15 May 2010 11:18:58 +0000 Subject: [PATCH] drivers/net/usb: Use kmemdup 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/) // @@ 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); // Signed-off-by: Julia Lawall Signed-off-by: David S. Miller --- drivers/net/usb/pegasus.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/net/usb/pegasus.c b/drivers/net/usb/pegasus.c index 1cd17d274a12..974d17f0263e 100644 --- a/drivers/net/usb/pegasus.c +++ b/drivers/net/usb/pegasus.c @@ -203,13 +203,12 @@ static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size, char *buffer; DECLARE_WAITQUEUE(wait, current); - buffer = kmalloc(size, GFP_KERNEL); + buffer = kmemdup(data, size, GFP_KERNEL); if (!buffer) { netif_warn(pegasus, drv, pegasus->net, "out of memory in %s\n", __func__); return -ENOMEM; } - memcpy(buffer, data, size); add_wait_queue(&pegasus->ctrl_wait, &wait); set_current_state(TASK_UNINTERRUPTIBLE); @@ -255,13 +254,12 @@ static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data) char *tmp; DECLARE_WAITQUEUE(wait, current); - tmp = kmalloc(1, GFP_KERNEL); + tmp = kmemdup(&data, 1, GFP_KERNEL); if (!tmp) { netif_warn(pegasus, drv, pegasus->net, "out of memory in %s\n", __func__); return -ENOMEM; } - memcpy(tmp, &data, 1); add_wait_queue(&pegasus->ctrl_wait, &wait); set_current_state(TASK_UNINTERRUPTIBLE); while (pegasus->flags & ETH_REGS_CHANGED) -- 2.20.1