mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-02 15:18:19 +00:00
Code Issues Releases Wiki Activity

crypto: rockchip - move the crypto completion from interrupt context

Browse source 
It's illegal to call the completion function from hardirq context,
it will cause runtime tests to fail. Let's build a new task (done_task)
for moving update operation from hardirq context.

Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Zain Wang 2017-07-24 09:23:13 +08:00 committed by Herbert Xu
parent 1d5449445b
commit 641eacd156
4 changed files with 33 additions and 14 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

39
drivers/crypto/rockchip/rk3288_crypto.c
View file

@ -169,24 +169,22 @@ static irqreturn_t rk_crypto_irq_handle(int irq, void *dev_id)
{
struct rk_crypto_info *dev = platform_get_drvdata(dev_id);
u32 interrupt_status;
int err = 0;
spin_lock(&dev->lock);
interrupt_status = CRYPTO_READ(dev, RK_CRYPTO_INTSTS);
CRYPTO_WRITE(dev, RK_CRYPTO_INTSTS, interrupt_status);
if (interrupt_status & 0x0a) {
dev_warn(dev->dev, "DMA Error\n");
err = -EFAULT;
} else if (interrupt_status & 0x05) {
err = dev->update(dev);
dev->err = -EFAULT;
}
if (err)
dev->complete(dev, err);
tasklet_schedule(&dev->done_task);
spin_unlock(&dev->lock);
return IRQ_HANDLED;
}
static void rk_crypto_tasklet_cb(unsigned long data)
static void rk_crypto_queue_task_cb(unsigned long data)
{
struct rk_crypto_info *dev = (struct rk_crypto_info *)data;
struct crypto_async_request *async_req, *backlog;
@ -210,11 +208,26 @@ static void rk_crypto_tasklet_cb(unsigned long data)
dev->ablk_req = ablkcipher_request_cast(async_req);
else
dev->ahash_req = ahash_request_cast(async_req);
dev->err = 0;
err = dev->start(dev);
if (err)
dev->complete(dev, err);
}
static void rk_crypto_done_task_cb(unsigned long data)
{
struct rk_crypto_info *dev = (struct rk_crypto_info *)data;
if (dev->err) {
dev->complete(dev, dev->err);
return;
}
dev->err = dev->update(dev);
if (dev->err)
dev->complete(dev, dev->err);
}
static struct rk_crypto_tmp *rk_cipher_algs[] = {
&rk_ecb_aes_alg,
&rk_cbc_aes_alg,
@ -361,8 +374,10 @@ static int rk_crypto_probe(struct platform_device *pdev)
crypto_info->dev = &pdev->dev;
platform_set_drvdata(pdev, crypto_info);
tasklet_init(&crypto_info->crypto_tasklet,
rk_crypto_tasklet_cb, (unsigned long)crypto_info);
tasklet_init(&crypto_info->queue_task,
rk_crypto_queue_task_cb, (unsigned long)crypto_info);
tasklet_init(&crypto_info->done_task,
rk_crypto_done_task_cb, (unsigned long)crypto_info);
crypto_init_queue(&crypto_info->queue, 50);
crypto_info->enable_clk = rk_crypto_enable_clk;
@ -380,7 +395,8 @@ static int rk_crypto_probe(struct platform_device *pdev)
return 0;
err_register_alg:
tasklet_kill(&crypto_info->crypto_tasklet);
tasklet_kill(&crypto_info->queue_task);
tasklet_kill(&crypto_info->done_task);
err_crypto:
return err;
}
@ -390,7 +406,8 @@ static int rk_crypto_remove(struct platform_device *pdev)
struct rk_crypto_info *crypto_tmp = platform_get_drvdata(pdev);
rk_crypto_unregister();
tasklet_kill(&crypto_tmp->crypto_tasklet);
tasklet_kill(&crypto_tmp->done_task);
tasklet_kill(&crypto_tmp->queue_task);
return 0;
}

4
drivers/crypto/rockchip/rk3288_crypto.h
View file

@ -190,9 +190,11 @@ struct rk_crypto_info {
void __iomem *reg;
int irq;
struct crypto_queue queue;
struct tasklet_struct crypto_tasklet;
struct tasklet_struct queue_task;
struct tasklet_struct done_task;
struct ablkcipher_request *ablk_req;
struct ahash_request *ahash_req;
int err;
/* device lock */
spinlock_t lock;

2
drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c
View file

@ -42,7 +42,7 @@ static int rk_handle_req(struct rk_crypto_info *dev,
spin_lock_irqsave(&dev->lock, flags);
err = ablkcipher_enqueue_request(&dev->queue, req);
spin_unlock_irqrestore(&dev->lock, flags);
tasklet_schedule(&dev->crypto_tasklet);
tasklet_schedule(&dev->queue_task);
return err;
}

2
drivers/crypto/rockchip/rk3288_crypto_ahash.c
View file

@ -204,7 +204,7 @@ static int rk_ahash_digest(struct ahash_request *req)
ret = crypto_enqueue_request(&dev->queue, &req->base);
spin_unlock_irqrestore(&dev->lock, flags);
tasklet_schedule(&dev->crypto_tasklet);
tasklet_schedule(&dev->queue_task);
/*
* it will take some time to process date after last dma transmission.