linux-kernel - Re: [PATCH net-next 3/5] net: ravb: Return cached statistics if the interface is down

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Message-ID: <a1071795-2915-eef8-9f88-04744a49c163@omp.ru>
Date: Wed, 7 Feb 2024 23:18:14 +0300
From: Sergey Shtylyov <s.shtylyov@....ru>
To: Claudiu <claudiu.beznea@...on.dev>, <davem@...emloft.net>,
	<edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>
CC: <netdev@...r.kernel.org>, <linux-renesas-soc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Claudiu Beznea
	<claudiu.beznea.uj@...renesas.com>
Subject: Re: [PATCH net-next 3/5] net: ravb: Return cached statistics if the
 interface is down

On 2/7/24 3:07 PM, Claudiu wrote:

> From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
> 
> Return the cached statistics in case the interface is down. There should be
> no drawback to this, as cached statistics are updated in ravb_close().
> 
> In order to avoid accessing the IP registers while the IP is runtime
> suspended pm_runtime_active() check was introduced. The device runtime
> PM usage counter has been incremented to avoid disabling the device clocks
> while the check is in progress (if any).
> 
> The commit prepares the code for the addition of runtime PM support.
> 
> Suggested-by: Sergey Shtylyov <s.shtylyov@....ru>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>

Reviewed-by: Sergey Shtylyov <s.shtylyov@....ru>

[...]

MBR, Sergey