linux-kernel - [PATCH RESEND 2/2] soc: qcom: stats: Mark device as having no PM support

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Date:   Fri, 14 Oct 2022 17:49:34 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>
Cc:     linux-kernel@...r.kernel.org, patches@...ts.linux.dev,
        linux-arm-msm@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...ainline.org>
Subject: [PATCH RESEND 2/2] soc: qcom: stats: Mark device as having no PM support

This driver purely exposes information from memory to the kernel. Let's
mark it as not having any device PM functionality, so that during
suspend we skip even trying to call a suspend function on this device.
This clears up suspend logs more than anything else, but it also shaves
a few cycles off suspend.

Cc: Konrad Dybcio <konrad.dybcio@...ainline.org>
Signed-off-by: Stephen Boyd <swboyd@...omium.org>
---
 drivers/soc/qcom/qcom_stats.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/soc/qcom/qcom_stats.c b/drivers/soc/qcom/qcom_stats.c
index d6bfd1bbdc2a..d89453a77408 100644
--- a/drivers/soc/qcom/qcom_stats.c
+++ b/drivers/soc/qcom/qcom_stats.c
@@ -217,6 +217,8 @@ static int qcom_stats_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, root);
 
+	device_set_pm_not_required(&pdev->dev);
+
 	return 0;
 }
 
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