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, T_DKIMWL_WL_HIGH,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 80853C04AB1 for ; Thu, 9 May 2019 21:08:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4878D217F9 for ; Thu, 9 May 2019 21:08:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557436133; bh=Wy8moiJ/cxkmnT7sGOzk7oIpYpwQsbJLuL5U19+Hoy0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=QE4Fv3agkMjwAmpRJP7SdssGJ6BpvqpcoGT1hBN0inwqND4txYsAJudoZc5sta6BA nPELyObccBKcz4RM2OQM3G85elQ64x8FcvsGKCalkBcKwwrKZEBr7CzsW+nTWBqoAm UHyFkmvFOPqd1gZEQfPE1OimViFKcU2VTxHo+1kA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727164AbfEIVIs (ORCPT ); Thu, 9 May 2019 17:08:48 -0400 Received: from mail.kernel.org ([198.145.29.99]:43630 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727100AbfEIVIj (ORCPT ); Thu, 9 May 2019 17:08:39 -0400 Received: from localhost.localdomain (user-0ccsrjt.cable.mindspring.com [24.206.110.125]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 191772182B; Thu, 9 May 2019 21:08:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557436118; bh=Wy8moiJ/cxkmnT7sGOzk7oIpYpwQsbJLuL5U19+Hoy0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=I7DS+tnpGwvB8LZXcLlEyE65norosYX0q9XnIZvckAyAy327wuNuF2YHZ8AY85XvG j5VQ7ZZT6R9++eM9o/xj/xDSd7HK18iX9GRzImQ9vVaNpcCU+Sq26RfwfYE0S00HjH VHTJt25dZmFL81UjQ/4xVzpZv4T3/Gfv3XZdncVI= From: Alan Tull To: Greg Kroah-Hartman Cc: Moritz Fischer , Alan Tull , linux-kernel@vger.kernel.org, linux-fpga@vger.kernel.org, Chengguang Xu , Wu Hao Subject: [PATCH 4/4] fpga: dfl: expand minor range when registering chrdev region Date: Thu, 9 May 2019 16:08:29 -0500 Message-Id: <20190509210829.31815-5-atull@kernel.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190509210829.31815-1-atull@kernel.org> References: <20190509210829.31815-1-atull@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chengguang Xu 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 --- 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 c25217cde5ca..4b66aaa32b5a 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; } -- 2.21.0