From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935171AbcJRVCD (ORCPT ); Tue, 18 Oct 2016 17:02:03 -0400 Received: from ec2-52-27-115-49.us-west-2.compute.amazonaws.com ([52.27.115.49]:43318 "EHLO s-opensource.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934860AbcJRVCB (ORCPT ); Tue, 18 Oct 2016 17:02:01 -0400 From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org Cc: Javier Martinez Canillas , Wolfram Sang , linux-i2c@vger.kernel.org Subject: [PATCH 1/4] i2c: jz4780: Fix module autoload Date: Tue, 18 Oct 2016 18:01:45 -0300 Message-Id: <1476824508-4679-2-git-send-email-javier@osg.samsung.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1476824508-4679-1-git-send-email-javier@osg.samsung.com> References: <1476824508-4679-1-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/i2c/busses/i2c-jz4780.ko | grep alias $ After this patch: $ modinfo drivers/i2c/busses/i2c-jz4780.ko | grep alias alias: of:N*T*Cingenic,jz4780-i2cC* alias: of:N*T*Cingenic,jz4780-i2c Signed-off-by: Javier Martinez Canillas --- drivers/i2c/busses/i2c-jz4780.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/i2c/busses/i2c-jz4780.c b/drivers/i2c/busses/i2c-jz4780.c index b8ea62105f42..30132c3957cd 100644 --- a/drivers/i2c/busses/i2c-jz4780.c +++ b/drivers/i2c/busses/i2c-jz4780.c @@ -729,6 +729,7 @@ static const struct of_device_id jz4780_i2c_of_matches[] = { { .compatible = "ingenic,jz4780-i2c", }, { /* sentinel */ } }; +MODULE_DEVICE_TABLE(of, jz4780_i2c_of_matches); static int jz4780_i2c_probe(struct platform_device *pdev) { -- 2.7.4