linux-kernel - Re: [PATCH v7 9/9] interconnect: qcom: msm8996: Promote to core

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Message-ID: <937279a0-2e62-7061-3752-dfb94ee6d1f6@linaro.org>
Date:   Fri, 10 Mar 2023 14:23:21 +0000
From:   Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Georgi Djakov <djakov@...nel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 9/9] interconnect: qcom: msm8996: Promote to
 core_initcall

On 08/03/2023 21:40, Konrad Dybcio wrote:
> The interconnect driver is (or soon will be) vital to many other
> devices, as it's not a given that the bootloader will set up enough
> bandwidth for us or that the values we come into are reasonable.
> 
> Promote the driver to core_initcall to ensure the consumers (i.e.
> most "meaningful" parts of the SoC) can probe without deferrals.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>   drivers/interconnect/qcom/msm8996.c | 12 +++++++++++-
>   1 file changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/interconnect/qcom/msm8996.c b/drivers/interconnect/qcom/msm8996.c
> index 347fe59ec293..1eb51ed18b0b 100644
> --- a/drivers/interconnect/qcom/msm8996.c
> +++ b/drivers/interconnect/qcom/msm8996.c
> @@ -2109,7 +2109,17 @@ static struct platform_driver qnoc_driver = {
>   		.sync_state = icc_sync_state,
>   	}
>   };
> -module_platform_driver(qnoc_driver);
> +static int __init qnoc_driver_init(void)
> +{
> +	return platform_driver_register(&qnoc_driver);
> +}
> +core_initcall(qnoc_driver_init);
> +
> +static void __exit qnoc_driver_exit(void)
> +{
> +	platform_driver_unregister(&qnoc_driver);
> +}
> +module_exit(qnoc_driver_exit);
>   
>   MODULE_AUTHOR("Yassine Oudjana <y.oudjana@...tonmail.com>");
>   MODULE_DESCRIPTION("Qualcomm MSM8996 NoC driver");
> 

Its probably the right-thing-to-do to have interconnects probe earlier 
but, then, why restrict that to 8996 only ?

---
bod