linux-kernel - Re: [PATCH] interconnect: qcom: sm8450: Revert "interconnect: qcom: sm8450: Enable sync

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Message-ID: <201733c1-dc24-4d77-9967-f52c8e81d35b@kernel.org>
Date: Mon, 15 Jan 2024 18:44:48 +0200
From: Georgi Djakov <djakov@...nel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
 Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konrad.dybcio@...aro.org>, Vinod Koul <vkoul@...nel.org>,
 linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
 linux-kernel@...r.kernel.org
Cc: stable@...r.kernel.org
Subject: Re: [PATCH] interconnect: qcom: sm8450: Revert "interconnect: qcom:
 sm8450: Enable sync_state"

On 15.01.24 17:34, Krzysztof Kozlowski wrote:
> Revert commit 16862f1b2110 ("interconnect: qcom: sm8450: Enable
> sync_state"), because it causes serial console to corrupt, later freeze
> and become either entirely corrupted or only print without accepting any
> input.

Sounds like some driver is not requesting bandwidth and is relying on
bandwidth requests made by other drivers. Maybe we are missing some
"interconnects" property in DT?

Thanks,
Georgi

> Cc: <stable@...r.kernel.org>
> Fixes: 16862f1b2110 ("interconnect: qcom: sm8450: Enable sync_state")
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
>   drivers/interconnect/qcom/sm8450.c | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/interconnect/qcom/sm8450.c b/drivers/interconnect/qcom/sm8450.c
> index b3cd0087377c..952017940b02 100644
> --- a/drivers/interconnect/qcom/sm8450.c
> +++ b/drivers/interconnect/qcom/sm8450.c
> @@ -1888,7 +1888,6 @@ static struct platform_driver qnoc_driver = {
>   	.driver = {
>   		.name = "qnoc-sm8450",
>   		.of_match_table = qnoc_of_match,
> -		.sync_state = icc_sync_state,
>   	},
>   };
>