From: Javier Martinez Canillas <javier@osg.samsung.com>
Date: Mon, 7 Nov 2016 20:31:44 +0000 (-0300)
Subject: hwmon: (scpi) Fix module autoload
X-Git-Tag: firefly_0821_release~176^2~4^2~5^2~37
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=07c05622f63d286d16e64ce5793452d283f69905;p=firefly-linux-kernel-4.4.55.git

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 7e20567bc369..6827169c82d4 100644
--- 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 = {