From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S944568AbcJSVGs (ORCPT ); Wed, 19 Oct 2016 17:06:48 -0400 Received: from ec2-52-27-115-49.us-west-2.compute.amazonaws.com ([52.27.115.49]:48278 "EHLO s-opensource.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933233AbcJSVGp (ORCPT ); Wed, 19 Oct 2016 17:06:45 -0400 From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org Cc: Javier Martinez Canillas , Kyungmin Park , MyungJoo Ham , linux-pm@vger.kernel.org Subject: [PATCH 1/4] PM / devfreq: rk3399_dmc: Fix module autoload Date: Wed, 19 Oct 2016 18:06:24 -0300 Message-Id: <1476911187-11040-2-git-send-email-javier@osg.samsung.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1476911187-11040-1-git-send-email-javier@osg.samsung.com> References: <1476911187-11040-1-git-send-email-javier@osg.samsung.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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/rk3399_dmc.ko | grep alias $ After this patch: $ modinfo drivers/devfreq/rk3399_dmc.ko | grep alias alias: of:N*T*Crockchip,rk3399-dmcC* alias: of:N*T*Crockchip,rk3399-dmc Signed-off-by: Javier Martinez Canillas --- drivers/devfreq/rk3399_dmc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/devfreq/rk3399_dmc.c b/drivers/devfreq/rk3399_dmc.c index e24b73d66659..77bd9d02e870 100644 --- a/drivers/devfreq/rk3399_dmc.c +++ b/drivers/devfreq/rk3399_dmc.c @@ -454,6 +454,7 @@ static const struct of_device_id rk3399dmc_devfreq_of_match[] = { { .compatible = "rockchip,rk3399-dmc" }, { }, }; +MODULE_DEVICE_TABLE(of, rk3399dmc_devfreq_of_match); static struct platform_driver rk3399_dmcfreq_driver = { .probe = rk3399_dmcfreq_probe, -- 2.7.4