linux-kernel - Re: [PATCH] arm64: dts: qcom: sc7180-trogdor: Disable pwmleds node where unused

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <a03d415c-02c8-4eeb-9e16-122e61d333f6@linaro.org>
Date: Tue, 18 Jun 2024 16:39:44 +0200
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Nícolas F. R. A. Prado <nfraprado@...labora.com>,
 cros-qcom-dts-watchers@...omium.org, Bjorn Andersson <andersson@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Rob Clark <robdclark@...omium.org>,
 Douglas Anderson <dianders@...omium.org>, Stephen Boyd <swboyd@...omium.org>
Cc: kernel@...labora.com, linux-arm-msm@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: sc7180-trogdor: Disable pwmleds node
 where unused

On 6/14/24 22:59, Nícolas F. R. A. Prado wrote:
> Currently the keyboard backlight is described in the common
> sc7180-trogdor dtsi as an led node below a pwmleds node, and the led
> node is set to disabled. Only the boards that have a keyboard backlight
> enable it.
> 
> However, since the parent pwmleds node is still enabled everywhere, even
> on boards that don't have keyboard backlight it is probed and fails,
> resulting in an error:
> 
>    leds_pwm pwmleds: probe with driver leds_pwm failed with error -22
> 
> as well as a failure in the DT kselftest:
> 
>    not ok 45 /pwmleds
> 
> Fix this by controlling the status of the parent pwmleds node instead of
> the child led, based on the presence of keyboard backlight. This is what
> is done on sc7280 already.
> 
> While at it add a missing blank line before the child node to follow the
> coding style.
> 
> Fixes: 7ec3e67307f8 ("arm64: dts: qcom: sc7180-trogdor: add initial trogdor and lazor dt")
> Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad