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From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net-next V5 3/9] liquidio CN23XX: Mailbox support
Date: Thu, 10 Nov 2016 12:19:10 -0500 (EST)
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From: Raghu Vatsavayi <rvatsavayi@caviumnetworks.com>
Date: Wed, 9 Nov 2016 15:13:46 -0800

> +		dev_info(&oct->pci_dev->dev,
> +			 "PF changed VF's MAC address to %02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx\n",
> +			 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);

We have a standard mechanism to print network addresses, including
MAC ones, via the %pXXX format specifier.  In this case you should
use "%pM" or "%pm" depending upon whether you want the address printed
with colon separators or not.