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From: Thierry Reding <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Dinghao Liu <dinghao.liu-Y5EWUtBUdg4nDS1+zs4M5A@public.gmane.org>
Cc: kjlu-OJFnDUYgAso@public.gmane.org,
	Lorenzo Pieralisi
	<lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org>,
	Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Bjorn Helgaas <bhelgaas-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
	Jonathan Hunter
	<jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
	linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH] PCI: tegra: fix runtime pm imbalance on error
Date: Wed, 20 May 2020 11:40:35 +0200	[thread overview]
Message-ID: <20200520094035.GC2136208@ulmo> (raw)
In-Reply-To: <20200520084012.30190-1-dinghao.liu-Y5EWUtBUdg4nDS1+zs4M5A@public.gmane.org>

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On Wed, May 20, 2020 at 04:40:12PM +0800, Dinghao Liu wrote:
> pm_runtime_get_sync() increments the runtime PM usage counter even
> it returns an error code. Thus a pairing decrement is needed on

s/even it/even when it/

> the error handling path to keep the counter balanced.
> 
> Also This driver forgets to call pm_runtime_disable() when

s/Also This/Also this/

> pm_runtime_get_sync() returns an error code.
> 
> Signed-off-by: Dinghao Liu <dinghao.liu-Y5EWUtBUdg4nDS1+zs4M5A@public.gmane.org>
> ---
>  drivers/pci/controller/pci-tegra.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)

Otherwise looks correct. It's came as somewhat of a surprise to me that
pm_runtime_get_sync() increments the usage counter even on failure, but
it does indeed.

With the above fixes to the commit message:

Acked-by: Thierry Reding <treding-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>

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  parent reply	other threads:[~2020-05-20  9:40 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-20  8:40 [PATCH] PCI: tegra: fix runtime pm imbalance on error Dinghao Liu
     [not found] ` <20200520084012.30190-1-dinghao.liu-Y5EWUtBUdg4nDS1+zs4M5A@public.gmane.org>
2020-05-20  9:40   ` Thierry Reding [this message]
2020-05-20 16:42   ` Bjorn Helgaas
  -- strict thread matches above, loose matches on Subject: below --
2020-05-20  8:52 Dinghao Liu
     [not found] ` <20200520085231.32552-1-dinghao.liu-Y5EWUtBUdg4nDS1+zs4M5A@public.gmane.org>
2020-05-20  9:59   ` Thierry Reding
2020-05-20 16:37     ` Bjorn Helgaas
2020-05-20 18:09       ` Vidya Sagar
     [not found]         ` <e7c967a0-c285-450a-bbad-f6456c661d41-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2020-05-29 10:23           ` Lorenzo Pieralisi
2020-05-29 10:58             ` Vidya Sagar

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