hwmon: (scpi) Fix module autoload

commit 13edb767aa609b6efb7c0c2b57fbd72a6ded0eed upstream.

If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.

Export the module alias information using the MODULE_DEVICE_TABLE() macro.

Before this patch:

$ modinfo drivers/hwmon/scpi-hwmon.ko | grep alias
$

After this patch:

$ modinfo drivers/hwmon/scpi-hwmon.ko | grep alias
alias:          of:N*T*Carm,scpi-sensorsC*
alias:          of:N*T*Carm,scpi-sensors

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Fixes: ea98b29a05e9c ("hwmon: Support sensors exported via ARM SCP interface")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/hwmon/scpi-hwmon.c b/drivers/hwmon/scpi-hwmon.c
index 7e20567bc36912ada47687716405733e1372bc8a..6827169c82d4dca174883c35b07d343a0d3edc14 100644 (file)
--- a/drivers/hwmon/scpi-hwmon.c
+++ b/drivers/hwmon/scpi-hwmon.c
@@ -272,6 +272,7 @@ static const struct of_device_id scpi_of_match[] = {
        {.compatible = "arm,scpi-sensors"},
        {},
 };
+MODULE_DEVICE_TABLE(of, scpi_of_match);
 
 static struct platform_driver scpi_hwmon_platdrv = {
        .driver = {