From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759897AbaIOXB4 (ORCPT ); Mon, 15 Sep 2014 19:01:56 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:50812 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932649AbaIOWN7 (ORCPT ); Mon, 15 Sep 2014 18:13:59 -0400 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: =?UTF-8?q?Guido=20Mart=C3=ADnez?= , Dave Airlie , Kamal Mostafa Subject: [PATCH 3.13 063/187] drm/tilcdc: slave: fix dangling sysfs connector node Date: Mon, 15 Sep 2014 15:07:53 -0700 Message-Id: <1410818997-9432-64-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1410818997-9432-1-git-send-email-kamal@canonical.com> References: <1410818997-9432-1-git-send-email-kamal@canonical.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Extended-Stable: 3.13 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.13.11.7 -stable review patch. If anyone has any objections, please let me know. ------------------ From: =?UTF-8?q?Guido=20Mart=C3=ADnez?= commit daa15b4cd1eee58eb1322062a3320b1dbe5dc96e upstream. Add a drm_sysfs_connector_remove call when we destroy the panel to make sure the connector node in sysfs gets deleted. This is required for proper unload and re-load of this driver as a module. Without this, we would get a warning at re-load time like so: tda998x 0-0070: found TDA19988 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 825 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x54/0x74() sysfs: cannot create duplicate filename '/class/drm/card0-HDMI-A-1' Modules linked in: [..] CPU: 0 PID: 825 Comm: modprobe Not tainted 3.15.0-rc4-00027-g9dcdef4 #82 [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [] (show_stack) from [] (warn_slowpath_common+0x68/0x88) [] (warn_slowpath_common) from [] (warn_slowpath_fmt+0x30/0x40) [] (warn_slowpath_fmt) from [] (sysfs_warn_dup+0x54/0x74) [] (sysfs_warn_dup) from [] (sysfs_do_create_link_sd.isra.2+0xb0/0xb8) [] (sysfs_do_create_link_sd.isra.2) from [] (device_add+0x338/0x520) [] (device_add) from [] (device_create_groups_vargs+0xa0/0xc4) [] (device_create_groups_vargs) from [] (device_create+0x24/0x2c) [] (device_create) from [] (drm_sysfs_connector_add+0x64/0x204) [] (drm_sysfs_connector_add) from [] (slave_modeset_init+0x120/0x1bc [tilcdc]) [] (slave_modeset_init [tilcdc]) from [] (tilcdc_load+0x214/0x4c0 [tilcdc]) [] (tilcdc_load [tilcdc]) from [] (drm_dev_register+0xa4/0x104) [..snip..] ---[ end trace 4df8d614936ebdee ]--- [drm:drm_sysfs_connector_add] *ERROR* failed to register connector device: -17 Signed-off-by: Guido Martínez Tested-by: Darren Etheridge Signed-off-by: Dave Airlie Signed-off-by: Kamal Mostafa --- drivers/gpu/drm/tilcdc/tilcdc_slave.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/tilcdc/tilcdc_slave.c b/drivers/gpu/drm/tilcdc/tilcdc_slave.c index 595068b..2f83ffb 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_slave.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_slave.c @@ -166,6 +166,7 @@ struct slave_connector { static void slave_connector_destroy(struct drm_connector *connector) { struct slave_connector *slave_connector = to_slave_connector(connector); + drm_sysfs_connector_remove(connector); drm_connector_cleanup(connector); kfree(slave_connector); } -- 1.9.1