linux-kernel - Re: [PATCH v3] clk: qcom: clk-alpha-pll: Fix pll post div mask when width is not set

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Message-ID: <vkfy47q3glm2gehs3rmunerslvzrfyz4wa4egdb6k26ucim7iu@ad24jwkdybeg>
Date: Mon, 7 Oct 2024 00:03:40 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Barnabás Czémán <barnabas.czeman@...nlining.org>
Cc: Bjorn Andersson <andersson@...nel.org>, 
	Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, 
	Satya Priya Kakitapalli <quic_skakitap@...cinc.com>, Konrad Dybcio <konradybcio@...nel.org>, 
	Abhishek Sahu <absahu@...eaurora.org>, linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Stephen Boyd <sboyd@...eaurora.org>
Subject: Re: [PATCH v3] clk: qcom: clk-alpha-pll: Fix pll post div mask when
 width is not set

On Sun, Oct 06, 2024 at 10:51:58PM GMT, Barnabás Czémán wrote:
> Many qcom clock drivers do not have .width set. In that case value of
> (p)->width - 1 will be negative which breaks clock tree. Fix this
> by checking if width is zero, and pass 3 to GENMASK if that's the case.
> 
> Fixes: 1c3541145cbf ("clk: qcom: support for 2 bit PLL post divider")
> Signed-off-by: Barnabás Czémán <barnabas.czeman@...nlining.org>
> ---
> Changes in v3:
> - Remove one of the fixes tag.
> - Link to v2: https://lore.kernel.org/r/20240925-fix-postdiv-mask-v2-1-b825048b828b@mainlining.org
> 
> Changes in v2:
> - Pass 3 to GENMASK instead of 0.
> - Add more Fixes tag for reference root cause.
> - Link to v1: https://lore.kernel.org/r/20240925-fix-postdiv-mask-v1-1-f70ba55f415e@mainlining.org
> ---
>  drivers/clk/qcom/clk-alpha-pll.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

-- 
With best wishes
Dmitry