From: Javier Martinez Canillas <javier@osg.samsung.com>
Date: Wed, 19 Oct 2016 21:06:27 +0000 (-0300)
Subject: PM / devfreq: exynos-ppmu: Fix module autoload
X-Git-Tag: accepted/tizen/4.0/unified/20170920.081531~75
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e7ec9c0c3bd8a9ab4acce2a758e0c02e429c5e21;p=platform%2Fkernel%2Flinux-exynos.git

PM / devfreq: exynos-ppmu: 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/devfreq/event/exynos-ppmu.ko | grep alias
$

After this patch:

$ modinfo drivers/devfreq/event/exynos-ppmu.ko | grep alias
alias:          of:N*T*Csamsung,exynos-ppmu-v2C*
alias:          of:N*T*Csamsung,exynos-ppmu-v2
alias:          of:N*T*Csamsung,exynos-ppmuC*
alias:          of:N*T*Csamsung,exynos-ppmu

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
---

diff --git a/drivers/devfreq/event/exynos-ppmu.c b/drivers/devfreq/event/exynos-ppmu.c
index 439b42d..5e14444 100644
--- a/drivers/devfreq/event/exynos-ppmu.c
+++ b/drivers/devfreq/event/exynos-ppmu.c
@@ -350,6 +350,7 @@ static struct of_device_id exynos_ppmu_id_match[] = {
 	},
 	{ /* sentinel */ },
 };
+MODULE_DEVICE_TABLE(of, exynos_ppmu_id_match);
 
 static struct devfreq_event_ops *exynos_bus_get_ops(struct device_node *np)
 {