fpga: dfl: expand minor range when registering chrdev region (de9a7f6f) · Commits · 戴 / test

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>

drivers/fpga/dfl.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -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;
		}

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