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26149b0202
The secvar code only supports one consumer at a time. Multiple consumers aren't possible at this point in time, but we'd want it to be obvious if it ever could happen. Signed-off-by: Russell Currey <ruscur@russell.cc> Co-developed-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20230210080401.345462-6-ajd@linux.ibm.com
23 lines
452 B
C
23 lines
452 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2019 IBM Corporation
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* Author: Nayna Jain
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*
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* This file initializes secvar operations for PowerPC Secureboot
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*/
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#include <linux/cache.h>
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#include <asm/secvar.h>
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#include <asm/bug.h>
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const struct secvar_operations *secvar_ops __ro_after_init = NULL;
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int set_secvar_ops(const struct secvar_operations *ops)
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{
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if (WARN_ON_ONCE(secvar_ops))
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return -EBUSY;
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secvar_ops = ops;
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return 0;
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}
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