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| author | Chengguang Xu <cgxu519@gmx.com> | 2019-05-09 16:08:29 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-24 20:32:12 +0200 |
| commit | de9a7f6f5f1967d275311cca9163b4a3ffe9b0ae (patch) | |
| tree | aa2878a6e3de8b12eed8f4b7a4ee30495934c723 | |
| parent | dfe3de8d397bf878b31864d4e489d41118ec475f (diff) | |
| download | lwn-de9a7f6f5f1967d275311cca9163b4a3ffe9b0ae.tar.gz lwn-de9a7f6f5f1967d275311cca9163b4a3ffe9b0ae.zip | |
fpga: dfl: expand minor range when registering chrdev region
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 <cgxu519@gmx.com>
Acked-by: Wu Hao <hao.wu@intel.com>
Acked-by: Alan Tull <atull@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/fpga/dfl.c | 6 |
1 files 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; } |