netdev - Re: [PATCH v2 3/4] net: macb: Add pm runtime support

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Message-ID: <20181126144710.GC12116@lunn.ch>
Date:   Mon, 26 Nov 2018 15:47:10 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Harini Katakam <harini.katakam@...inx.com>
Cc:     nicolas.ferre@...rochip.com, davem@...emloft.net,
        claudiu.beznea@...rochip.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, michal.simek@...inx.com,
        harinikatakamlinux@...il.com, Harini Katakam <harinik@...inx.com>,
        Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
Subject: Re: [PATCH v2 3/4] net: macb: Add pm runtime support

> @@ -335,6 +338,10 @@ static int macb_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
>  	int value;
>  	int err;
>  
> +	err = pm_runtime_get_sync(&bp->pdev->dev);
> +	if (err < 0)
> +		return err;
> +
>  	err = macb_mdio_wait_for_idle(bp);
>  	if (err < 0)
>  		return err;

Hi Harini

Thanks for adding runtime PM support to the MDIO bus.

It looks like on the error paths you are not always undoing the
pm_runtime_get_sync(). You probably need some sort of goto err;
construct. macb_mdio_write() has the same issue.

	Andrew