linux-kernel - [PATCH 2/3] thermal: tango: Fix module autoload

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Message-Id: <1476455702-21748-3-git-send-email-javier@osg.samsung.com>
Date:   Fri, 14 Oct 2016 11:35:01 -0300
From:   Javier Martinez Canillas <javier@....samsung.com>
To:     linux-kernel@...r.kernel.org
Cc:     Javier Martinez Canillas <javier@....samsung.com>,
        Marc Gonzalez <marc_gonzalez@...madesigns.com>,
        linux-pm@...r.kernel.org, Eduardo Valentin <edubezval@...il.com>,
        Zhang Rui <rui.zhang@...el.com>,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 2/3] thermal: tango: 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/tango_thermal.ko | grep alias
$

After this patch:

$ modinfo drivers/thermal/tango_thermal.ko | grep alias
alias:          of:N*T*Csigma,smp8758-thermalC*
alias:          of:N*T*Csigma,smp8758-thermal

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

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

diff --git a/drivers/thermal/tango_thermal.c b/drivers/thermal/tango_thermal.c
index 201304aeafeb..4e67795cb6ce 100644
--- a/drivers/thermal/tango_thermal.c
+++ b/drivers/thermal/tango_thermal.c
@@ -107,6 +107,7 @@ static const struct of_device_id tango_sensor_ids[] = {
 	},
 	{ /* sentinel */ }
 };
+MODULE_DEVICE_TABLE(of, tango_sensor_ids);
 
 static struct platform_driver tango_thermal_driver = {
 	.probe	= tango_thermal_probe,
-- 
2.7.4