Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758623AbcJQTvi (ORCPT ); Mon, 17 Oct 2016 15:51:38 -0400 Received: from ec2-52-27-115-49.us-west-2.compute.amazonaws.com ([52.27.115.49]:37588 "EHLO s-opensource.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757682AbcJQTva (ORCPT ); Mon, 17 Oct 2016 15:51:30 -0400 From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org Cc: Jason Gunthorpe , Javier Martinez Canillas , Kevin Hilman , Neil Armstrong , PrasannaKumar Muralidharan , Carlo Caione , linux-amlogic@lists.infradead.org, Herbert Xu , Matt Mackall , linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org Subject: [PATCH v2] hwrng: meson: Fix module autoload for OF registration Date: Mon, 17 Oct 2016 16:51:17 -0300 Message-Id: <1476733877-20275-1-git-send-email-javier@osg.samsung.com> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1291 Lines: 42 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/char/hw_random/meson-rng.ko | grep alias alias: platform:meson-rng After this patch: $ modinfo drivers/char/hw_random/meson-rng.ko | grep alias alias: platform:meson-rng alias: of:N*T*Camlogic,meson-rngC* alias: of:N*T*Camlogic,meson-rng Signed-off-by: Javier Martinez Canillas --- Changes in v2: - Remove unrelated changes added by mistake. Suggested by Jason Gunthorpe. drivers/char/hw_random/meson-rng.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/char/hw_random/meson-rng.c b/drivers/char/hw_random/meson-rng.c index 58bef39f7286..51864a509be7 100644 --- a/drivers/char/hw_random/meson-rng.c +++ b/drivers/char/hw_random/meson-rng.c @@ -110,6 +110,7 @@ static const struct of_device_id meson_rng_of_match[] = { { .compatible = "amlogic,meson-rng", }, {}, }; +MODULE_DEVICE_TABLE(of, meson_rng_of_match); static struct platform_driver meson_rng_driver = { .probe = meson_rng_probe, -- 2.7.4