netdev - Re: [PATCH v3 1/2] PM: runtime: Add pm_runtime_resume_and

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Date:   Fri, 13 Nov 2020 11:43:45 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Zhang Qilong <zhangqilong3@...wei.com>
Cc:     <rjw@...ysocki.net>, <fugang.duan@....com>, <davem@...emloft.net>,
        <linux-pm@...r.kernel.org>, <netdev@...r.kernel.org>
Subject: Re: [PATCH v3 1/2] PM: runtime: Add pm_runtime_resume_and_get to
 deal with usage counter

On Tue, 10 Nov 2020 17:29:32 +0800 Zhang Qilong wrote:
> In many case, we need to check return value of pm_runtime_get_sync, but
> it brings a trouble to the usage counter processing. Many callers forget
> to decrease the usage counter when it failed, which could resulted in
> reference leak. It has been discussed a lot[0][1]. So we add a function
> to deal with the usage counter for better coding.
> 
> [0]https://lkml.org/lkml/2020/6/14/88
> [1]https://patchwork.ozlabs.org/project/linux-tegra/list/?series=178139
> Signed-off-by: Zhang Qilong <zhangqilong3@...wei.com>

FWIW I'm expecting to apply this series to net-next once we get an ack
from the power management side.