linux-kernel - Re: [PATCH] drm/tegra: dpaux: Fix PM disable depth imbalance in tegra_dpaux

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Message-ID: <ZXs7C6Yp77UoMCYV@orome.fritz.box>
Date:   Thu, 14 Dec 2023 18:27:39 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Zhang Shurong <zhang_shurong@...mail.com>
Cc:     mperttunen@...dia.com, airlied@...il.com, daniel@...ll.ch,
        jonathanh@...dia.com, p.zabel@...gutronix.de, lgirdwood@...il.com,
        broonie@...nel.org, dri-devel@...ts.freedesktop.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/tegra: dpaux: Fix PM disable depth imbalance in
 tegra_dpaux_probe

On Wed, Oct 04, 2023 at 10:10:55PM +0800, Zhang Shurong wrote:
> The pm_runtime_enable function increases the power disable depth,
> which means that we must perform a matching decrement on the error
> handling path to maintain balance within the given context.
> Additionally, we need to address the same issue for pm_runtime_get_sync.
> We fix this by invoking pm_runtime_disable and pm_runtime_put_sync
> when error returns.
> 
> Fixes: 82b81b3ec1a7 ("drm/tegra: dpaux: Implement runtime PM")
> Signed-off-by: Zhang Shurong <zhang_shurong@...mail.com>
> ---
>  drivers/gpu/drm/tegra/dpaux.c | 14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)

Applied, thanks.

Thierry

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