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From: Javier Martinez Canillas <javier@osg.samsung.com>
To: linux-kernel@vger.kernel.org
Cc: Javier Martinez Canillas <javier@osg.samsung.com>,
	Kukjin Kim <kgene@kernel.org>,
	linux-pm@vger.kernel.org, Chanwoo Choi <cw00.choi@samsung.com>,
	linux-samsung-soc@vger.kernel.org,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	MyungJoo Ham <myungjoo.ham@samsung.com>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/4] PM / devfreq: exynos-nocp: Fix module autoload
Date: Wed, 19 Oct 2016 18:06:25 -0300	[thread overview]
Message-ID: <1476911187-11040-3-git-send-email-javier@osg.samsung.com> (raw)
In-Reply-To: <1476911187-11040-1-git-send-email-javier@osg.samsung.com>

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-nocp.ko | grep alias
$

After this patch:

$ modinfo drivers/devfreq/event/exynos-nocp.ko | grep alias
alias:          of:N*T*Csamsung,exynos5420-nocpC*
alias:          of:N*T*Csamsung,exynos5420-nocp

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

 drivers/devfreq/event/exynos-nocp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/devfreq/event/exynos-nocp.c b/drivers/devfreq/event/exynos-nocp.c
index 49e712aca0c1..5c3e7b11e8a6 100644
--- a/drivers/devfreq/event/exynos-nocp.c
+++ b/drivers/devfreq/event/exynos-nocp.c
@@ -190,6 +190,7 @@ static const struct of_device_id exynos_nocp_id_match[] = {
 	{ .compatible = "samsung,exynos5420-nocp", },
 	{ /* sentinel */ },
 };
+MODULE_DEVICE_TABLE(of, exynos_nocp_id_match);
 
 static struct regmap_config exynos_nocp_regmap_config = {
 	.reg_bits = 32,
-- 
2.7.4

  parent reply	other threads:[~2016-10-19 21:07 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20161019210649epcas1p4e0c178cb75709bb242da10d9c1fd77d2@epcas1p4.samsung.com>
2016-10-19 21:06 ` [PATCH 0/4] PM / devfreq: Fix module autoload for platform drivers Javier Martinez Canillas
2016-10-19 21:06   ` [PATCH 1/4] PM / devfreq: rk3399_dmc: Fix module autoload Javier Martinez Canillas
2016-10-19 21:06   ` Javier Martinez Canillas [this message]
2016-10-19 21:06   ` [PATCH 3/4] PM / devfreq: rockchip-dfi: " Javier Martinez Canillas
2016-10-19 21:06   ` [PATCH 4/4] PM / devfreq: exynos-ppmu: " Javier Martinez Canillas
2016-10-20  2:24   ` [PATCH 0/4] PM / devfreq: Fix module autoload for platform drivers Chanwoo Choi

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