treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / arch / s390 / include / asm / pkey.h
blobdd3d20c332ace4492240722f62c7b6c3b9e5a705
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Kernelspace interface to the pkey device driver
5 * Copyright IBM Corp. 2016,2019
7 * Author: Harald Freudenberger <freude@de.ibm.com>
9 */
11 #ifndef _KAPI_PKEY_H
12 #define _KAPI_PKEY_H
14 #include <linux/ioctl.h>
15 #include <linux/types.h>
16 #include <uapi/asm/pkey.h>
19 * In-kernel API: Transform an key blob (of any type) into a protected key.
20 * @param key pointer to a buffer containing the key blob
21 * @param keylen size of the key blob in bytes
22 * @param protkey pointer to buffer receiving the protected key
23 * @return 0 on success, negative errno value on failure
25 int pkey_keyblob2pkey(const u8 *key, u32 keylen,
26 struct pkey_protkey *protkey);
28 #endif /* _KAPI_PKEY_H */