This driver can be built as a module since commit 3b062a086984 ("cpufreq:
dt-platdev: Support building as module"), but unfortunately this caused
a regression because the cputfreq-dt-platdev.ko module does not autoload.
Usually, this is solved by just using the MODULE_DEVICE_TABLE() macro to
export all the device IDs as module aliases. But this driver is special
due how matches with devices and decides what platform supports.
There are two of_device_id lists, an allow list that are for CPU devices
that always match and a deny list that's for devices that must not match.
The driver registers a cpufreq-dt platform device for all the CPU device
nodes that either are in the allow list or contain an operating-points-v2
property and are not in the deny list.
Enforce builtin compile of cpufreq-dt-platdev to make autoload work.
Fixes: 3b062a086984 ("cpufreq: dt-platdev: Support building as module")
Link: https://lore.kernel.org/all/20241104201424.2a42efdd@akair/
Link: https://lore.kernel.org/all/20241119111918.1732531-1-javierm@xxxxxxxxxx/
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Andreas Kemnade <andreas@xxxxxxxxxxxx>
Reported-by: Radu Rendec <rrendec@xxxxxxxxxx>
Reported-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>
[ Viresh: Picked commit log from Javier, updated tags ]
Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
index 92a83a9bb2e1..ea9afdc119fb 100644
--- a/drivers/cpufreq/Kconfig
+++ b/drivers/cpufreq/Kconfig
@@ -232,7 +232,7 @@ config CPUFREQ_VIRT
If in doubt, say N.
config CPUFREQ_DT_PLATDEV
- tristate "Generic DT based cpufreq platdev driver"
+ bool "Generic DT based cpufreq platdev driver"
depends on OF
help
This adds a generic DT based cpufreq platdev driver for frequency
diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index 2a3e8bd317c9..9c198bd4f7e9 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -235,5 +235,3 @@ static int __init cpufreq_dt_platdev_init(void)
sizeof(struct cpufreq_dt_platform_data)));
}
core_initcall(cpufreq_dt_platdev_init);
-MODULE_DESCRIPTION("Generic DT based cpufreq platdev driver");
-MODULE_LICENSE("GPL");
