linux-kernel - [PATCH v5 5/5] cpufreq: qcom: Disable fast switch when scaling DDR/L3

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200527202153.11659-6-sibis@codeaurora.org>
Date:   Thu, 28 May 2020 01:51:53 +0530
From:   Sibi Sankar <sibis@...eaurora.org>
To:     viresh.kumar@...aro.org, sboyd@...nel.org,
        georgi.djakov@...aro.org, saravanak@...gle.com, mka@...omium.org
Cc:     nm@...com, bjorn.andersson@...aro.org, agross@...nel.org,
        rjw@...ysocki.net, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        dianders@...omium.org, vincent.guittot@...aro.org,
        amit.kucheria@...aro.org, lukasz.luba@....com,
        sudeep.holla@....com, smasetty@...eaurora.org,
        Sibi Sankar <sibis@...eaurora.org>
Subject: [PATCH v5 5/5] cpufreq: qcom: Disable fast switch when scaling DDR/L3

Disable fast switch when the opp-tables required for scaling DDR/L3
are populated.

Signed-off-by: Sibi Sankar <sibis@...eaurora.org>
---

V5:
 * Drop dev_pm_opp_get_path_count [Saravana]

 drivers/cpufreq/qcom-cpufreq-hw.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
index fbd73d106a3ae..ff6ad7ac38411 100644
--- a/drivers/cpufreq/qcom-cpufreq-hw.c
+++ b/drivers/cpufreq/qcom-cpufreq-hw.c
@@ -159,6 +159,8 @@ static int qcom_cpufreq_hw_read_lut(struct device *cpu_dev,
 	} else if (ret != -ENODEV) {
 		dev_err(cpu_dev, "Invalid OPP table in Device tree\n");
 		return ret;
+	} else {
+		policy->fast_switch_possible = true;
 	}
 
 	for (i = 0; i < LUT_MAX_ENTRIES; i++) {
@@ -308,8 +310,6 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy)
 
 	dev_pm_opp_of_register_em(policy->cpus);
 
-	policy->fast_switch_possible = true;
-
 	return 0;
 error:
 	devm_iounmap(dev, base);
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project