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Message-Id: <1309770483-16026-1-git-send-email-kristoffer@gaisler.com> Date: Mon, 4 Jul 2011 11:08:03 +0200 From: Kristoffer Glembo <kristoffer@...sler.com> To: netdev@...r.kernel.org Cc: Kristoffer Glembo <kristoffer@...sler.com> Subject: [PATCH] greth: greth_set_mac_add would corrupt the MAC address. The MAC address was set using the signed char sockaddr->sa_addr field and thus the address could be corrupted through sign extension. Signed-off-by: Kristoffer Glembo <kristoffer@...sler.com> --- drivers/net/greth.c | 7 +++---- 1 files changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/net/greth.c b/drivers/net/greth.c index 82c3767..16ce45c 100644 --- a/drivers/net/greth.c +++ b/drivers/net/greth.c @@ -1017,11 +1017,10 @@ static int greth_set_mac_add(struct net_device *dev, void *p) return -EINVAL; memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); + GRETH_REGSAVE(regs->esa_msb, dev->dev_addr[0] << 8 | dev->dev_addr[1]); + GRETH_REGSAVE(regs->esa_lsb, dev->dev_addr[2] << 24 | dev->dev_addr[3] << 16 | + dev->dev_addr[4] << 8 | dev->dev_addr[5]); - GRETH_REGSAVE(regs->esa_msb, addr->sa_data[0] << 8 | addr->sa_data[1]); - GRETH_REGSAVE(regs->esa_lsb, - addr->sa_data[2] << 24 | addr-> - sa_data[3] << 16 | addr->sa_data[4] << 8 | addr->sa_data[5]); return 0; } -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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