From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B23FFC43381 for ; Wed, 27 Mar 2019 18:25:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7BAD02082F for ; Wed, 27 Mar 2019 18:25:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553711108; bh=HonvZVPJnqHaQyKibA/CamzJGvARH3/4Ilq4kLt+UZA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=B/yCS1LfC9J0gdnoy74zxWsAjCkISO9UkVC6qrZx5i8yux3b6kmNiVBnZLaB25KCL A+e2aUxUUReDDJJz4hj8Pm1NnIHFfiNF8hzid5HX7+KWSsNaqKIM8XLXXEIzPXWuPD 2AJk3k1zrNYqWrxNJRRZIw/ol10bao0sNV6LRNvk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391024AbfC0SZH (ORCPT ); Wed, 27 Mar 2019 14:25:07 -0400 Received: from mail.kernel.org ([198.145.29.99]:44096 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404088AbfC0SZE (ORCPT ); Wed, 27 Mar 2019 14:25:04 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8A20E20651; Wed, 27 Mar 2019 18:25:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553711104; bh=HonvZVPJnqHaQyKibA/CamzJGvARH3/4Ilq4kLt+UZA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZrHLTgTH3/TjBAXGhWjCHFQfHxtvGJ6FO9BSoLDhnVqBRS7ZAJPjd0/wk1ddzxYni EeKCTPzwbSrlNRxy2kKXr7UR8jFPodUfaSXw4hDNcFEjWnufTgbN77CyN2kOM42+le jnAAs7ZzQsdIlqzgyPTxYwDXt8V+e61qcG80hrEg= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Buland Singh , Greg Kroah-Hartman , Sasha Levin Subject: [PATCH AUTOSEL 4.4 55/63] hpet: Fix missing '=' character in the __setup() code of hpet_mmap_enable Date: Wed, 27 Mar 2019 14:23:15 -0400 Message-Id: <20190327182323.18577-55-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190327182323.18577-1-sashal@kernel.org> References: <20190327182323.18577-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Buland Singh [ Upstream commit 24d48a61f2666630da130cc2ec2e526eacf229e3 ] Commit '3d035f580699 ("drivers/char/hpet.c: allow user controlled mmap for user processes")' introduced a new kernel command line parameter hpet_mmap, that is required to expose the memory map of the HPET registers to user-space. Unfortunately the kernel command line parameter 'hpet_mmap' is broken and never takes effect due to missing '=' character in the __setup() code of hpet_mmap_enable. Before this patch: dmesg output with the kernel command line parameter hpet_mmap=1 [ 0.204152] HPET mmap disabled dmesg output with the kernel command line parameter hpet_mmap=0 [ 0.204192] HPET mmap disabled After this patch: dmesg output with the kernel command line parameter hpet_mmap=1 [ 0.203945] HPET mmap enabled dmesg output with the kernel command line parameter hpet_mmap=0 [ 0.204652] HPET mmap disabled Fixes: 3d035f580699 ("drivers/char/hpet.c: allow user controlled mmap for user processes") Signed-off-by: Buland Singh Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/char/hpet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c index 240b6cf1d97c..72e073895ed9 100644 --- a/drivers/char/hpet.c +++ b/drivers/char/hpet.c @@ -376,7 +376,7 @@ static __init int hpet_mmap_enable(char *str) pr_info("HPET mmap %s\n", hpet_mmap_enabled ? "enabled" : "disabled"); return 1; } -__setup("hpet_mmap", hpet_mmap_enable); +__setup("hpet_mmap=", hpet_mmap_enable); static int hpet_mmap(struct file *file, struct vm_area_struct *vma) { -- 2.19.1