From a61aac7cf1af1549d03cb8e7549c5427fabc6f5e Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sat, 15 May 2010 23:20:26 +0200 Subject: [PATCH] drivers/net/wireless/b43: 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: John W. Linville --- drivers/net/wireless/b43/dma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c index fa40fdfea71..fdfeab0c21a 100644 --- a/drivers/net/wireless/b43/dma.c +++ b/drivers/net/wireless/b43/dma.c @@ -1221,14 +1221,14 @@ static int dma_tx_fragment(struct b43_dmaring *ring, meta->dmaaddr = map_descbuffer(ring, skb->data, skb->len, 1); /* create a bounce buffer in zone_dma on mapping failure. */ if (b43_dma_mapping_error(ring, meta->dmaaddr, skb->len, 1)) { - priv_info->bouncebuffer = kmalloc(skb->len, GFP_ATOMIC | GFP_DMA); + priv_info->bouncebuffer = kmemdup(skb->data, skb->len, + GFP_ATOMIC | GFP_DMA); if (!priv_info->bouncebuffer) { ring->current_slot = old_top_slot; ring->used_slots = old_used_slots; err = -ENOMEM; goto out_unmap_hdr; } - memcpy(priv_info->bouncebuffer, skb->data, skb->len); meta->dmaaddr = map_descbuffer(ring, priv_info->bouncebuffer, skb->len, 1); if (b43_dma_mapping_error(ring, meta->dmaaddr, skb->len, 1)) { -- 2.20.1