From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: From: Chengguang Xu Subject: [PATCH] fpga: expand minor range when registering chrdev region Date: Tue, 12 Feb 2019 14:24:51 +0800 Message-Id: <20190212062451.1354-1-cgxu519@gmx.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit To: hao.wu@intel.com, atull@kernel.org, mdf@kernel.org Cc: linux-fpga@vger.kernel.org, Chengguang Xu List-ID: Actually, total amount of available minor number for a single major is MINORMARK + 1. So expand minor range when registering chrdev region. Signed-off-by: Chengguang Xu --- 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 2c09e502e721..02fff566be46 100644 --- a/drivers/fpga/dfl.c +++ b/drivers/fpga/dfl.c @@ -315,7 +315,7 @@ 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); } } @@ -325,8 +325,8 @@ 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