From: Rashika Kheria Date: Thu, 24 Oct 2013 10:54:51 +0000 (+0530) Subject: Staging: et131x: Fix Smatch Warning of Buffer Overflow X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9c7bc37628d8edef821176fcd7872efd54358f50;p=linux-beck.git Staging: et131x: Fix Smatch Warning of Buffer Overflow This patch fixes the following Sparse Warning in et131x.c- drivers/staging/et131x/et131x.c:2957 nic_send_packet() error: buffer overflow 'frags' 17 <= 21 drivers/staging/et131x/et131x.c:2959 nic_send_packet() warn: buffer overflow 'frags' 17 <= 21 drivers/staging/et131x/et131x.c:2961 nic_send_packet() error: buffer overflow 'frags' 17 <= 21 Signed-off-by: Rashika Kheria Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/et131x/et131x.c b/drivers/staging/et131x/et131x.c index 7cd3d3470758..d9446c47bf2e 100644 --- a/drivers/staging/et131x/et131x.c +++ b/drivers/staging/et131x/et131x.c @@ -2902,8 +2902,9 @@ static int nic_send_packet(struct et131x_adapter *adapter, struct tcb *tcb) * number of fragments. If needed, we can call this function, * although it is less efficient. */ - if (nr_frags > 23) - return -EIO; + + /* nr_frags should be no more than 18. */ + BUILD_BUG_ON(MAX_SKB_FRAGS + 1 > 23); memset(desc, 0, sizeof(struct tx_desc) * (nr_frags + 1));