netdev - Re: [PATCH] [v9] net: emac: emac gigabit ethernet controller driver

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Date:   Wed, 31 Aug 2016 14:19:26 -0500
From:   Timur Tabi <timur@...eaurora.org>
To:     Florian Fainelli <f.fainelli@...il.com>,
        Rami Rosen <roszenrami@...il.com>
Cc:     Netdev <netdev@...r.kernel.org>, devicetree@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, sdharia@...eaurora.org,
        shankerd@...eaurora.org, vikrams@...eaurora.org,
        cov@...eaurora.org, gavidov@...eaurora.org, robh+dt@...nel.org,
        andrew@...n.ch, bjorn.andersson@...aro.org, mlangsdo@...hat.com,
        jcm@...hat.com, agross@...eaurora.org,
        David Miller <davem@...emloft.net>, LinoSanfilippo@....de
Subject: Re: [PATCH] [v9] net: emac: emac gigabit ethernet controller driver

Florian Fainelli wrote:
> if these are truly 64-bits stats, how come you are using a single
> readl_* to access them? Or is the u64 rx_err_addr just used as temporary
> storage and aligned to the largest size you need to deal with?

"*stats_itr += val;" takes the 32-bit val, zero-extends it to 64 bits, 
and then adds that to the corresponding 64-bit field in emac_stats.

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