linux-kernel - [PATCH 5.11 267/601] cpufreq: armada-37xx: Fix determining base CPU frequency

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Date:   Wed, 12 May 2021 16:45:44 +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,
        Pali Rohár <pali@...nel.org>,
        Gregory CLEMENT <gregory.clement@...tlin.com>,
        Tomasz Maciej Nowak <tmn505@...il.com>,
        Anders Trier Olesen <anders.trier.olesen@...il.com>,
        Philip Soares <philips@...isense.com>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.11 267/601] cpufreq: armada-37xx: Fix determining base CPU frequency

From: Pali Rohár <pali@...nel.org>

[ Upstream commit 8bad3bf23cbc40abe1d24cec08a114df6facf858 ]

When current CPU load is not L0 then loading armada-37xx-cpufreq.ko driver
fails with following error:

    # modprobe armada-37xx-cpufreq
    [  502.702097] Unsupported CPU frequency 250 MHz

This issue was partially fixed by commit 8db82563451f ("cpufreq:
armada-37xx: fix frequency calculation for opp"), but only for calculating
CPU frequency for opp.

Fix this also for determination of base CPU frequency.

Signed-off-by: Pali Rohár <pali@...nel.org>
Acked-by: Gregory CLEMENT <gregory.clement@...tlin.com>
Tested-by: Tomasz Maciej Nowak <tmn505@...il.com>
Tested-by: Anders Trier Olesen <anders.trier.olesen@...il.com>
Tested-by: Philip Soares <philips@...isense.com>
Fixes: 92ce45fb875d ("cpufreq: Add DVFS support for Armada 37xx")
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/cpufreq/armada-37xx-cpufreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/armada-37xx-cpufreq.c b/drivers/cpufreq/armada-37xx-cpufreq.c
index 1ab2113daef5..e4782f562e7a 100644
--- a/drivers/cpufreq/armada-37xx-cpufreq.c
+++ b/drivers/cpufreq/armada-37xx-cpufreq.c
@@ -469,7 +469,7 @@ static int __init armada37xx_cpufreq_driver_init(void)
 		return -EINVAL;
 	}
 
-	dvfs = armada_37xx_cpu_freq_info_get(cur_frequency);
+	dvfs = armada_37xx_cpu_freq_info_get(base_frequency);
 	if (!dvfs) {
 		clk_put(clk);
 		return -EINVAL;
-- 
2.30.2