linux-kernel - Re: [PATCH] firmware: qcom_scm: disable clocks if qcom_scm_bw

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Date: Mon, 4 Mar 2024 21:50:39 +0530
From: Mukesh Ojha <quic_mojha@...cinc.com>
To: Gabor Juhos <j4g8y7@...il.com>, Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Sibi Sankar
	<quic_sibis@...cinc.com>
CC: <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <stable@...r.kernel.org>
Subject: Re: [PATCH] firmware: qcom_scm: disable clocks if
 qcom_scm_bw_enable() fails



On 3/4/2024 6:44 PM, Gabor Juhos wrote:
> There are several functions which are calling qcom_scm_bw_enable()
> then returns immediately if the call fails and leaves the clocks
> enabled.
> 
> Change the code of these functions to disable clocks when the
> qcom_scm_bw_enable() call fails. This also fixes a possible dma
> buffer leak in the qcom_scm_pas_init_image() function.
> 
> Compile tested only due to lack of hardware with interconnect
> support.
> 
> Cc: stable@...r.kernel.org
> Fixes: 65b7ebda5028 ("firmware: qcom_scm: Add bw voting support to the SCM interface")
> Signed-off-by: Gabor Juhos <j4g8y7@...il.com>
> ---
> Based on v6.8-rc7.
> 
> Note: Removing the two empty lines from qcom_scm_pas_init_image()
> and fomr qcom_scm_pas_shutdown() functions is intentional to make
> those consistent with the other two functions.

LGTM..

Reviewed-by: Mukesh Ojha <quic_mojha@...cinc.com>

-Mukesh