From: Zhengchao Shao shaozhengchao@huawei.com
[ Upstream commit 68740ab505431f268dc1ee26a54b871e75f0ddaa ]
When kunpeng916 encryption driver is used to deencrypt and decrypt packets during the softirq, it is not allowed to use mutex lock.
Fixes: 915e4e8413da ("crypto: hisilicon - SEC security accelerator driver") Signed-off-by: Zhengchao Shao shaozhengchao@huawei.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/crypto/hisilicon/sec/sec_algs.c | 14 +++++++------- drivers/crypto/hisilicon/sec/sec_drv.h | 2 +- 2 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/crypto/hisilicon/sec/sec_algs.c b/drivers/crypto/hisilicon/sec/sec_algs.c index 3e3cc28d5cfe..f672dc1ecfac 100644 --- a/drivers/crypto/hisilicon/sec/sec_algs.c +++ b/drivers/crypto/hisilicon/sec/sec_algs.c @@ -457,7 +457,7 @@ static void sec_skcipher_alg_callback(struct sec_bd_info *sec_resp, */ }
- mutex_lock(&ctx->queue->queuelock); + spin_lock_bh(&ctx->queue->queuelock); /* Put the IV in place for chained cases */ switch (ctx->cipher_alg) { case SEC_C_AES_CBC_128: @@ -517,7 +517,7 @@ static void sec_skcipher_alg_callback(struct sec_bd_info *sec_resp, list_del(&backlog_req->backlog_head); } } - mutex_unlock(&ctx->queue->queuelock); + spin_unlock_bh(&ctx->queue->queuelock);
mutex_lock(&sec_req->lock); list_del(&sec_req_el->head); @@ -806,7 +806,7 @@ static int sec_alg_skcipher_crypto(struct skcipher_request *skreq, */
/* Grab a big lock for a long time to avoid concurrency issues */ - mutex_lock(&queue->queuelock); + spin_lock_bh(&queue->queuelock);
/* * Can go on to queue if we have space in either: @@ -822,15 +822,15 @@ static int sec_alg_skcipher_crypto(struct skcipher_request *skreq, ret = -EBUSY; if ((skreq->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { list_add_tail(&sec_req->backlog_head, &ctx->backlog); - mutex_unlock(&queue->queuelock); + spin_unlock_bh(&queue->queuelock); goto out; }
- mutex_unlock(&queue->queuelock); + spin_unlock_bh(&queue->queuelock); goto err_free_elements; } ret = sec_send_request(sec_req, queue); - mutex_unlock(&queue->queuelock); + spin_unlock_bh(&queue->queuelock); if (ret) goto err_free_elements;
@@ -889,7 +889,7 @@ static int sec_alg_skcipher_init(struct crypto_skcipher *tfm) if (IS_ERR(ctx->queue)) return PTR_ERR(ctx->queue);
- mutex_init(&ctx->queue->queuelock); + spin_lock_init(&ctx->queue->queuelock); ctx->queue->havesoftqueue = false;
return 0; diff --git a/drivers/crypto/hisilicon/sec/sec_drv.h b/drivers/crypto/hisilicon/sec/sec_drv.h index 2d2f186674ba..ddc5d6bd7574 100644 --- a/drivers/crypto/hisilicon/sec/sec_drv.h +++ b/drivers/crypto/hisilicon/sec/sec_drv.h @@ -347,7 +347,7 @@ struct sec_queue { DECLARE_BITMAP(unprocessed, SEC_QUEUE_LEN); DECLARE_KFIFO_PTR(softqueue, typeof(struct sec_request_el *)); bool havesoftqueue; - struct mutex queuelock; + spinlock_t queuelock; void *shadow[SEC_QUEUE_LEN]; };