From: David Heidelberg <david@ixit.cz>
To: "Lee Jones" <lee@kernel.org>,
"Daniel Thompson" <danielt@kernel.org>,
"Jingoo Han" <jingoohan1@gmail.com>,
"Helge Deller" <deller@gmx.de>,
"Kiran Gunda" <quic_kgunda@quicinc.com>,
"Marco Mattiolo" <marco.mattiolo@hotmail.it>,
"Barnabás Czémán" <barnabas.czeman@mainlining.org>
Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org,
phone-devel@vger.kernel.org,
Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>,
Joel Selvaraj <foss@joelselvaraj.com>,
stable@vger.kernel.org
Subject: Re: [PATCH v3 1/4] backlight: qcom-wled: Fix NULL pointer dereference in PM callbacks
Date: Mon, 14 Sep 2026 20:34:48 +0200 [thread overview]
Message-ID: <9ada2cc5-1f2e-48fa-a170-052fe33dff29@ixit.cz> (raw)
In-Reply-To: <20260914-qcom-wled-backlight-v3-1-d69fe9843841@ixit.cz>
On 14/09/2026 20:14, David Heidelberg via B4 Relay wrote:
> From: David Heidelberg <david@ixit.cz>
>
> wled_probe() doesn't set the driver data for the platform device.
> As a result, dev_get_drvdata() in wled_remove() will return NULL,
> leading to a NULL pointer dereference afterward.
>
> Set the platform device driver data in wled_probe().
>
> Cc: stable@vger.kernel.org
> Fixes: feeab87b3072 ("backlight: qcom-wled: Add support for short circuit handling")
> Signed-off-by: David Heidelberg <david@ixit.cz>
> ---
> drivers/video/backlight/qcom-wled.c | 1 +
> 1 file changed, 1 insertion(+)
>
Please ignore this [1/4] patch, so at least the rest get fixed.
In next series, I'll omit this one (I thought it's easy drop in fix for
critical, but seems not).
David
next prev parent reply other threads:[~2026-09-14 18:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-14 18:14 [PATCH v3 0/4] backlight: qcom-wled: Fix OVP IRQ imbalance and start from the hardware state David Heidelberg via B4 Relay
2026-09-14 18:14 ` [PATCH v3 1/4] backlight: qcom-wled: Fix NULL pointer dereference in PM callbacks David Heidelberg via B4 Relay
2026-09-14 18:34 ` David Heidelberg [this message]
2026-09-14 18:14 ` [PATCH v3 2/4] backlight: qcom-wled: Fix WLED3 brightness register stride David Heidelberg via B4 Relay
2026-09-14 18:14 ` [PATCH v3 3/4] backlight: qcom-wled: Fix unbalanced OVP IRQ enable at probe David Heidelberg via B4 Relay
2026-09-14 18:14 ` [PATCH v3 4/4] backlight: qcom-wled: Read back the programmed brightness " David Heidelberg via B4 Relay
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