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/* PKCS#7 crypto data parser
 *
 * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */

#ifndef _CRYPTO_PKCS7_H
#define _CRYPTO_PKCS7_H

#include <linux/verification.h>
#include <crypto/public_key.h>

struct key;
struct pkcs7_message;

/*
 * pkcs7_parser.c
 */
extern struct pkcs7_message *pkcs7_parse_message(const void *data,
						 size_t datalen);
extern void pkcs7_free_message(struct pkcs7_message *pkcs7);

extern int pkcs7_get_content_data(const struct pkcs7_message *pkcs7,
				  const void **_data, size_t *_datalen,
				  size_t *_headerlen);

/*
 * pkcs7_trust.c
 */
extern int pkcs7_validate_trust(struct pkcs7_message *pkcs7,
				struct key *trust_keyring);

/*
 * pkcs7_verify.c
 */
extern int pkcs7_verify(struct pkcs7_message *pkcs7,
			enum key_being_used_for usage);

extern int pkcs7_supply_detached_data(struct pkcs7_message *pkcs7,
				      const void *data, size_t datalen);

#endif /* _CRYPTO_PKCS7_H */
et-next.git/commit/tools/virtio/virtio-trace/trace-agent.c?h=nds-private-remove&id=1001354ca34179f3db924eb66672442a173147dc'>1001354ca34179f3db924eb66672442a173147dc (diff)
regulator: gpio: properly check return value of of_get_named_gpio
The function of_get_named_gpio() could return -ENOENT, -EPROBE_DEFER -EINVAL and so on. Currently, for the optional property "enable-gpio", we only check -EPROBE_DEFER, this is not enough since there may be misconfigured "enable-gpio" in the DTB, of_get_named_gpio() will return -EINVAL in this case, we should return immediately here. And for the optional property "gpios", we didn't check the return value, the driver will continue to the point where gpio_request_array() is called, it doesn't make sense to continue if we got -EPROBE_DEFER or -EINVAL here. This patch tries to address these two issues by properly checking the return value of of_get_named_gpio. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'tools/virtio/virtio-trace/trace-agent.c')