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15fd2566bf
The PM code was racy, possibly causing the driver to submit
requests to a powered down device. Fix the race and while
at it simplify the PM code.
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Fixes: 1358c13a48 ("crypto: ccree - fix resume race condition on init")
Cc: stable@kernel.org # v4.20
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2012-2019 ARM Limited (or its affiliates). */
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/* \file cc_request_mgr.h
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* Request Manager
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*/
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#ifndef __REQUEST_MGR_H__
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#define __REQUEST_MGR_H__
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#include "cc_hw_queue_defs.h"
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int cc_req_mgr_init(struct cc_drvdata *drvdata);
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/*!
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* Enqueue caller request to crypto hardware.
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*
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* \param drvdata
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* \param cc_req The request to enqueue
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* \param desc The crypto sequence
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* \param len The crypto sequence length
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* \param is_dout If "true": completion is handled by the caller
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* If "false": this function adds a dummy descriptor completion
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* and waits upon completion signal.
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*
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* \return int Returns -EINPROGRESS or error
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*/
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int cc_send_request(struct cc_drvdata *drvdata, struct cc_crypto_req *cc_req,
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struct cc_hw_desc *desc, unsigned int len,
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struct crypto_async_request *req);
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int cc_send_sync_request(struct cc_drvdata *drvdata,
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struct cc_crypto_req *cc_req, struct cc_hw_desc *desc,
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unsigned int len);
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int send_request_init(struct cc_drvdata *drvdata, struct cc_hw_desc *desc,
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unsigned int len);
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void complete_request(struct cc_drvdata *drvdata);
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void cc_req_mgr_fini(struct cc_drvdata *drvdata);
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#endif /*__REQUEST_MGR_H__*/
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