From patchwork Sat Dec 10 11:35:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 634011 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5771BC4332F for ; Sat, 10 Dec 2022 11:43:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229548AbiLJLnR (ORCPT ); Sat, 10 Dec 2022 06:43:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34200 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229623AbiLJLnQ (ORCPT ); Sat, 10 Dec 2022 06:43:16 -0500 X-Greylist: delayed 450 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Sat, 10 Dec 2022 03:43:05 PST Received: from smtp.smtpout.orange.fr (smtp-13.smtpout.orange.fr [80.12.242.13]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id AA7E1140B9 for ; Sat, 10 Dec 2022 03:43:05 -0800 (PST) Received: from pop-os.home ([86.243.100.34]) by smtp.orange.fr with ESMTPA id 3y8gpaJiRNF1W3y8gp0xrM; Sat, 10 Dec 2022 12:35:32 +0100 X-ME-Helo: pop-os.home X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Sat, 10 Dec 2022 12:35:32 +0100 X-ME-IP: 86.243.100.34 From: Christophe JAILLET To: Michal Januszewski , Helge Deller , Antonino Daplas , Andrew Morton Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET , linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [PATCH v2 1/2] video: fbdev: uvesafb: Fixes an error handling path in uvesafb_probe() Date: Sat, 10 Dec 2022 12:35:22 +0100 Message-Id: <0eba6acb70fa1270d8cf798afd11ce342aa7e8e1.1670671944.git.christophe.jaillet@wanadoo.fr> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org If an error occurs after a successful uvesafb_init_mtrr() call, it must be undone by a corresponding arch_phys_wc_del() call, as already done in the remove function. This has been added in the remove function in commit 63e28a7a5ffc ("uvesafb: Clean up MTRR code") Fixes: 8bdb3a2d7df4 ("uvesafb: the driver core") Signed-off-by: Christophe JAILLET --- Unsure about the Fixes tag, maybe it is 63e28a7a5ffc Change in v2: - add arch_phys_wc_del() at the right place in the error handling path v1 (a long time ago!): https://lore.kernel.org/all/dd2a4806d3a570ab84947806f38a494454fd0245.1622994310.git.christophe.jaillet@wanadoo.fr/ --- drivers/video/fbdev/uvesafb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c index 00d789b6c0fa..0e3cabbec4b4 100644 --- a/drivers/video/fbdev/uvesafb.c +++ b/drivers/video/fbdev/uvesafb.c @@ -1758,6 +1758,7 @@ static int uvesafb_probe(struct platform_device *dev) out_unmap: iounmap(info->screen_base); out_mem: + arch_phys_wc_del(par->mtrr_handle); release_mem_region(info->fix.smem_start, info->fix.smem_len); out_reg: release_region(0x3c0, 32);