linux-kernel - Re: [PATCH] phy: rockchip: samsung-hdptx: Set drvdata before enabling runtime PM

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Message-ID: <1876958.atdPhlSkOF@diego>
Date: Sat, 09 Nov 2024 23:13:12 +0100
From: Heiko Stübner <heiko@...ech.de>
To: Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I <kishon@...nel.org>,
 Algea Cao <algea.cao@...k-chips.com>,
 Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
Cc: kernel@...labora.com, linux-phy@...ts.infradead.org,
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org,
 linux-kernel@...r.kernel.org, Dmitry Osipenko <dmitry.osipenko@...labora.com>
Subject:
 Re: [PATCH] phy: rockchip: samsung-hdptx: Set drvdata before enabling runtime
 PM

Am Mittwoch, 23. Oktober 2024, 19:29:54 CET schrieb Cristian Ciocaltea:
> In some cases, rk_hdptx_phy_runtime_resume() may be invoked before
> platform_set_drvdata() is executed in ->probe(), leading to a NULL
> pointer dereference when using the return of dev_get_drvdata().
> 
> Ensure platform_set_drvdata() is called before devm_pm_runtime_enable().
> 
> Reported-by: Dmitry Osipenko <dmitry.osipenko@...labora.com>
> Fixes: 553be2830c5f ("phy: rockchip: Add Samsung HDMI/eDP Combo PHY driver")
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>

Reviewed-by: Heiko Stuebner <heiko@...ech.de>