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crypto: sahara - don't sleep when in softirq

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[ Upstream commit 108586eba0 ]

Function of sahara_aes_crypt maybe could be called by function
of crypto_skcipher_encrypt during the rx softirq, so it is not
allowed to use mutex lock.

Fixes: c0c3c89ae3 ("crypto: sahara - replace tasklets with...")
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>
This commit is contained in:
Zhengchao Shao 2022-07-25 12:09:28 +08:00 committed by Greg Kroah-Hartman
parent 8484023b57
commit e0b4ebf598
1 changed files with 9 additions and 9 deletions
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18
drivers/crypto/sahara.c
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@ -26,10 +26,10 @@
#include <linux/kernel.h>
#include <linux/kthread.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/spinlock.h>
#define SHA_BUFFER_LEN PAGE_SIZE
#define SAHARA_MAX_SHA_BLOCK_SIZE SHA256_BLOCK_SIZE
@ -196,7 +196,7 @@ struct sahara_dev {
void __iomem *regs_base;
struct clk *clk_ipg;
struct clk *clk_ahb;
struct mutex queue_mutex;
spinlock_t queue_spinlock;
struct task_struct *kthread;
struct completion dma_completion;
@ -642,9 +642,9 @@ static int sahara_aes_crypt(struct skcipher_request *req, unsigned long mode)
rctx->mode = mode;
mutex_lock(&dev->queue_mutex);
spin_lock_bh(&dev->queue_spinlock);
err = crypto_enqueue_request(&dev->queue, &req->base);
mutex_unlock(&dev->queue_mutex);
spin_unlock_bh(&dev->queue_spinlock);
wake_up_process(dev->kthread);
@ -1043,10 +1043,10 @@ static int sahara_queue_manage(void *data)
do {
__set_current_state(TASK_INTERRUPTIBLE);
mutex_lock(&dev->queue_mutex);
spin_lock_bh(&dev->queue_spinlock);
backlog = crypto_get_backlog(&dev->queue);
async_req = crypto_dequeue_request(&dev->queue);
mutex_unlock(&dev->queue_mutex);
spin_unlock_bh(&dev->queue_spinlock);
if (backlog)
backlog->complete(backlog, -EINPROGRESS);
@ -1092,9 +1092,9 @@ static int sahara_sha_enqueue(struct ahash_request *req, int last)
rctx->first = 1;
}
mutex_lock(&dev->queue_mutex);
spin_lock_bh(&dev->queue_spinlock);
ret = crypto_enqueue_request(&dev->queue, &req->base);
mutex_unlock(&dev->queue_mutex);
spin_unlock_bh(&dev->queue_spinlock);
wake_up_process(dev->kthread);
@ -1449,7 +1449,7 @@ static int sahara_probe(struct platform_device *pdev)
crypto_init_queue(&dev->queue, SAHARA_QUEUE_LENGTH);
mutex_init(&dev->queue_mutex);
spin_lock_init(&dev->queue_spinlock);
dev_ptr = dev;