[PATCH v2] cpufreq: Avoid printing kernel addresses in cpufreq_resume()

From: Liao Chang
Date: Tue Aug 29 2023 - 03:04:48 EST


The pointer value of policy and driver structure are currently printed
in the error messages of cpufreq_resume(), this is not recommended and
helpful. In order to be consistent with the error message in
cpufreq_suspend() and easier to understand, print the name of driver
strcture and the manage CPU of policy structure individually in the
error messages of cpufreq_resume().

Link: https://lore.kernel.org/all/b7be717c-41d8-bbbf-3e97-3799948ab757@xxxxxxxxxx
Signed-off-by: Liao Chang <liaochang1@xxxxxxxxxx>
---
drivers/cpufreq/cpufreq.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 50bbc969ffe5..26fa99d46684 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1943,16 +1943,16 @@ void cpufreq_resume(void)

for_each_active_policy(policy) {
if (cpufreq_driver->resume && cpufreq_driver->resume(policy)) {
- pr_err("%s: Failed to resume driver: %p\n", __func__,
- policy);
+ pr_err("%s: Failed to resume driver: %s\n", __func__,
+ cpufreq_driver->name);
} else if (has_target()) {
down_write(&policy->rwsem);
ret = cpufreq_start_governor(policy);
up_write(&policy->rwsem);

if (ret)
- pr_err("%s: Failed to start governor for policy: %p\n",
- __func__, policy);
+ pr_err("%s: Failed to start governor for CPU%u's policy\n",
+ __func__, policy->cpu);
}
}
}
--
2.34.1