From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: Received: from mail.kernel.org ([198.145.29.99]:50744 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726637AbfFNU3A (ORCPT ); Fri, 14 Jun 2019 16:29:00 -0400 From: Sasha Levin Subject: [PATCH AUTOSEL 5.1 17/59] fpga: dfl: expand minor range when registering chrdev region Date: Fri, 14 Jun 2019 16:28:01 -0400 Message-Id: <20190614202843.26941-17-sashal@kernel.org> In-Reply-To: <20190614202843.26941-1-sashal@kernel.org> References: <20190614202843.26941-1-sashal@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-fpga-owner@vger.kernel.org List-Id: linux-fpga@vger.kernel.org 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 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 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; } -- 2.20.1