linux-kernel - Re: [PATCH] net: stmmac: dwmac-rk: fix unbalanced pm_runtime

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Message-ID: <20210823094425.78d7a73e@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Mon, 23 Aug 2021 09:44:25 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Michael Riesch <michael.riesch@...fvision.net>
Cc:     netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>
Subject: Re: [PATCH] net: stmmac: dwmac-rk: fix unbalanced pm_runtime_enable
 warnings

On Mon, 23 Aug 2021 16:37:54 +0200 Michael Riesch wrote:
> In the commit to be reverted, support for power management was
> introduced to the Rockchip glue code. Later, power management support
> was introduced to the stmmac core code, resulting in multiple
> invocations of pm_runtime_{enable,disable,get_sync,put_sync}.

Can we get a Fixes tag? I.e. reference to the earliest commit where 
the warning can be triggered?

> The multiple invocations happen in rk_gmac_powerup and
> stmmac_{dvr_probe, resume} as well as in rk_gmac_powerdown and
> stmmac_{dvr_remove, suspend}, respectively, which are always called
> in conjunction.