Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932331Ab0D1WTH (ORCPT ); Wed, 28 Apr 2010 18:19:07 -0400 Received: from tex.lwn.net ([70.33.254.29]:48922 "EHLO vena.lwn.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932286Ab0D1WS3 (ORCPT ); Wed, 28 Apr 2010 18:18:29 -0400 From: Jonathan Corbet To: linux-kernel@vger.kernel.org Cc: Harald Welte , linux-fbdev@vger.kernel.org, JosephChan@via.com.tw, ScottFang@viatech.com.cn, Florian Tobias Schandinat Subject: [PATCH 29/30] viafb: fix proc entry removal Date: Wed, 28 Apr 2010 16:17:30 -0600 Message-Id: <1272493051-25380-30-git-send-email-corbet@lwn.net> X-Mailer: git-send-email 1.7.0.1 In-Reply-To: <1272493051-25380-1-git-send-email-corbet@lwn.net> References: <1272493051-25380-1-git-send-email-corbet@lwn.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2281 Lines: 63 From: Florian Tobias Schandinat viafb: fix proc entry removal Trying to remove unregistered proc entries became painful and is useless anyway. So remove the removal of an entry that was never registered and duplicate the logic for one which is added conditionally. Additionally move the removal above releasing fb_info as we still need the information. This prevents tainting the kernel by the procfs warn on and avoiding access to already freed memory is probably also a good idea. Signed-off-by: Florian Tobias Schandinat --- drivers/video/via/viafbdev.c | 13 +++++++------ 1 files changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/video/via/viafbdev.c b/drivers/video/via/viafbdev.c index e94f913..51e9106 100644 --- a/drivers/video/via/viafbdev.c +++ b/drivers/video/via/viafbdev.c @@ -1702,13 +1702,16 @@ static void viafb_init_proc(struct proc_dir_entry **viafb_entry) } static void viafb_remove_proc(struct proc_dir_entry *viafb_entry) { - /* no problem if it was not registered */ + struct chip_information *chip_info = &viaparinfo->shared->chip_info; + remove_proc_entry("dvp0", viafb_entry);/* parent dir */ remove_proc_entry("dvp1", viafb_entry); remove_proc_entry("dfph", viafb_entry); remove_proc_entry("dfpl", viafb_entry); - remove_proc_entry("vt1636", viafb_entry); - remove_proc_entry("vt1625", viafb_entry); + if (chip_info->lvds_chip_info.lvds_chip_name == VT1636_LVDS + || chip_info->lvds_chip_info2.lvds_chip_name == VT1636_LVDS) + remove_proc_entry("vt1636", viafb_entry); + remove_proc_entry("viafb", NULL); } @@ -1967,12 +1970,10 @@ void __devexit via_fb_pci_remove(struct pci_dev *pdev) unregister_framebuffer(viafbinfo); if (viafb_dual_fb) unregister_framebuffer(viafbinfo1); - + viafb_remove_proc(viaparinfo->shared->proc_entry); framebuffer_release(viafbinfo); if (viafb_dual_fb) framebuffer_release(viafbinfo1); - - viafb_remove_proc(viaparinfo->shared->proc_entry); } #ifndef MODULE -- 1.7.0.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/