Messages in this thread Patch in this message | | | From | Mario Limonciello <> | Subject | [PATCH 1/3] cpufreq: Allow passing NULL as the argument for unregistering a driver | Date | Fri, 25 Mar 2022 00:42:26 -0500 |
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Currently the arguments passed to `cpufreq_unregister_driver` are matched against the currently registered driver.
This means that the only way for a driver to be unregistered is if it's module is unloaded. Loosen that restriction to allow other kernel modules to unregister a registered driver.
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> --- drivers/cpufreq/cpufreq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 80f535cc8a75..4711c17a89bb 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -2885,10 +2885,10 @@ int cpufreq_unregister_driver(struct cpufreq_driver *driver) { unsigned long flags; - if (!cpufreq_driver || (driver != cpufreq_driver)) + if (!cpufreq_driver) return -EINVAL; - pr_debug("unregistering driver %s\n", driver->name); + pr_debug("unregistering driver %s\n", cpufreq_driver->name); /* Protect against concurrent cpu hotplug */ cpus_read_lock(); -- 2.34.1
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