linux-kernel - [PATCH v7 1/3] scmi-cpufreq: Remove deferred probe

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]

Date:   Mon, 15 Feb 2021 07:51:37 +0000
From:   Nicola Mazzucato <nicola.mazzucato@....com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-pm@...r.kernel.org, sudeep.holla@....com, rjw@...ysocki.net,
        vireshk@...nel.org, cristian.marussi@....com
Cc:     morten.rasmussen@....com, chris.redpath@....com,
        ionela.voinescu@....com, nicola.mazzucato@....com
Subject: [PATCH v7 1/3] scmi-cpufreq: Remove deferred probe

The current implementation of the scmi_cpufreq_init() function returns
-EPROBE_DEFER when the OPP table is not populated. In practice the
cpufreq core cannot handle this error code.
Therefore, fix the return value and clarify the error message.

Reviewed-by: Ionela Voinescu <ionela.voinescu@....com>
Signed-off-by: Nicola Mazzucato <nicola.mazzucato@....com>
---
 drivers/cpufreq/scmi-cpufreq.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c
index 491a0a24fb1e..34bf2eb8d465 100644
--- a/drivers/cpufreq/scmi-cpufreq.c
+++ b/drivers/cpufreq/scmi-cpufreq.c
@@ -155,9 +155,11 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
 
 	nr_opp = dev_pm_opp_get_opp_count(cpu_dev);
 	if (nr_opp <= 0) {
-		dev_dbg(cpu_dev, "OPP table is not ready, deferring probe\n");
-		ret = -EPROBE_DEFER;
-		goto out_free_opp;
+		dev_err(cpu_dev, "%s: No OPPs for this device: %d\n",
+			__func__, ret);
+
+		ret = -ENODEV;
+		goto out_free_priv;
 	}
 
 	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
-- 
2.27.0