linux-kernel - [PATCH 3/3] thermal: db8500: Fix module autoload

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Message-Id: <1476455702-21748-4-git-send-email-javier@osg.samsung.com>
Date:   Fri, 14 Oct 2016 11:35:02 -0300
From:   Javier Martinez Canillas <javier@....samsung.com>
To:     linux-kernel@...r.kernel.org
Cc:     Javier Martinez Canillas <javier@....samsung.com>,
        Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>,
        linux-pm@...r.kernel.org
Subject: [PATCH 3/3] thermal: db8500: Fix module autoload

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/thermal/db8500_thermal.ko | grep alias
$

After this patch:

$ modinfo drivers/thermal/db8500_thermal.ko | grep alias
alias:          of:N*T*Cstericsson,db8500-thermalC*
alias:          of:N*T*Cstericsson,db8500-thermal

Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>

---

 drivers/thermal/db8500_thermal.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/thermal/db8500_thermal.c b/drivers/thermal/db8500_thermal.c
index e776cea80cfc..f491faf16592 100644
--- a/drivers/thermal/db8500_thermal.c
+++ b/drivers/thermal/db8500_thermal.c
@@ -512,6 +512,7 @@ static const struct of_device_id db8500_thermal_match[] = {
 	{ .compatible = "stericsson,db8500-thermal" },
 	{},
 };
+MODULE_DEVICE_TABLE(of, db8500_thermal_match);
 #endif
 
 static struct platform_driver db8500_thermal_driver = {
-- 
2.7.4