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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 20C3CC31E4D for ; Fri, 14 Jun 2019 20:35:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DC9492084D for ; Fri, 14 Jun 2019 20:35:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1560544551; bh=ovPM9bDh/BKCt1Lv79G3XLom9qjK3CX4c8Uwl1nvjVg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=PkiYxj5awq6JHr1wms+rz3zosfInGI/bwZWwUuF+nAIAVQrs0blR6Ps727NBeRUj8 YfpOaFo//+j3uMO32BTnDXexsFYX/x+ZvLSJVxWHVNi8V3Zb1tEWlx32HiWNCWnf0v zFGsZM2Cm8YmJhYxZTnOLngoXGuD6RetIzUja/fc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727211AbfFNU3w (ORCPT ); Fri, 14 Jun 2019 16:29:52 -0400 Received: from mail.kernel.org ([198.145.29.99]:52128 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727196AbfFNU3v (ORCPT ); Fri, 14 Jun 2019 16:29:51 -0400 Received: from sasha-vm.mshome.net (unknown [131.107.159.134]) (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 B634921848; Fri, 14 Jun 2019 20:29:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1560544190; bh=ovPM9bDh/BKCt1Lv79G3XLom9qjK3CX4c8Uwl1nvjVg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dNrAhCF7c6oh+VFpW9/NWAgaFvDVFuggf5GxeiqTRouXEyIrkqN7jiChfADNk9pMy kfm9yaqYIkM2eoTAwDjRS/kE5rw+GPi7KvVnhi9cqdhFQ30uV9E0CQHQsbHJuSCXKi SnRqJ3DvqwVNqMVOq/z1PIMFKz+jP1+fE1Hzdfcw= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Chengguang Xu , Wu Hao , Alan Tull , Greg Kroah-Hartman , Sasha Levin , linux-fpga@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 08/39] fpga: dfl: expand minor range when registering chrdev region Date: Fri, 14 Jun 2019 16:29:13 -0400 Message-Id: <20190614202946.27385-8-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190614202946.27385-1-sashal@kernel.org> References: <20190614202946.27385-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Chengguang Xu [ Upstream commit de9a7f6f5f1967d275311cca9163b4a3ffe9b0ae ] Actually, total amount of available minor number for a single major is MINORMASK + 1. So expand minor range when registering chrdev region. Signed-off-by: Chengguang Xu Acked-by: Wu Hao Acked-by: Alan Tull Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/fpga/dfl.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c index ab361ec78df4..e38a55e84cd3 100644 --- a/drivers/fpga/dfl.c +++ b/drivers/fpga/dfl.c @@ -322,7 +322,7 @@ static void dfl_chardev_uinit(void) for (i = 0; i < DFL_FPGA_DEVT_MAX; i++) if (MAJOR(dfl_chrdevs[i].devt)) { unregister_chrdev_region(dfl_chrdevs[i].devt, - MINORMASK); + MINORMASK + 1); dfl_chrdevs[i].devt = MKDEV(0, 0); } } @@ -332,8 +332,8 @@ static int dfl_chardev_init(void) int i, ret; for (i = 0; i < DFL_FPGA_DEVT_MAX; i++) { - ret = alloc_chrdev_region(&dfl_chrdevs[i].devt, 0, MINORMASK, - dfl_chrdevs[i].name); + ret = alloc_chrdev_region(&dfl_chrdevs[i].devt, 0, + MINORMASK + 1, dfl_chrdevs[i].name); if (ret) goto exit; } -- 2.20.1