linux-kernel - [PATCH 6.0 099/862] cpufreq: qcom-cpufreq-hw: Fix uninitialized throttled

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Date:   Wed, 19 Oct 2022 10:23:06 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, kernel test robot <lkp@...el.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Viresh Kumar <viresh.kumar@...aro.org>
Subject: [PATCH 6.0 099/862] cpufreq: qcom-cpufreq-hw: Fix uninitialized throttled_freq warning

From: Viresh Kumar <viresh.kumar@...aro.org>

commit 91dc90fdb8b8199519a3aac9c46a433b02223c5b upstream.

Commit 6240aaad75e1 was supposed to drop the reference count to the OPP,
instead it avoided more stuff if the OPP isn't found. This isn't
entirely correct. We already have a frequency value available, we just
couldn't align it with an OPP in case of IS_ERR(opp).

Lets continue with updating thermal pressure, etc, even if we aren't
able to find an OPP here.

This fixes warning generated by the 'smatch' tool.

Fixes: 6240aaad75e1 ("cpufreq: qcom-hw: fix the opp entries refcounting")
Cc: v5.18+ <stable@...r.kernel.org> # v5.18+
Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/cpufreq/qcom-cpufreq-hw.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

--- a/drivers/cpufreq/qcom-cpufreq-hw.c
+++ b/drivers/cpufreq/qcom-cpufreq-hw.c
@@ -316,14 +316,14 @@ static void qcom_lmh_dcvs_notify(struct
 	if (IS_ERR(opp)) {
 		dev_warn(dev, "Can't find the OPP for throttling: %pe!\n", opp);
 	} else {
-		throttled_freq = freq_hz / HZ_PER_KHZ;
-
-		/* Update thermal pressure (the boost frequencies are accepted) */
-		arch_update_thermal_pressure(policy->related_cpus, throttled_freq);
-
 		dev_pm_opp_put(opp);
 	}
 
+	throttled_freq = freq_hz / HZ_PER_KHZ;
+
+	/* Update thermal pressure (the boost frequencies are accepted) */
+	arch_update_thermal_pressure(policy->related_cpus, throttled_freq);
+
 	/*
 	 * In the unlikely case policy is unregistered do not enable
 	 * polling or h/w interrupt