From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: From: Alan Tull 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> In-Reply-To: <20190509210829.31815-1-atull@kernel.org> References: <20190509210829.31815-1-atull@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit To: Greg Kroah-Hartman Cc: Moritz Fischer , Alan Tull , linux-kernel@vger.kernel.org, linux-fpga@vger.kernel.org, Chengguang Xu , Wu Hao List-ID: 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