diff options
| author | Zain Wang <wzz@rock-chips.com> | 2017-07-24 04:23:13 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2017-08-03 09:00:22 +0300 |
| commit | 641eacd15696a65b08880985701c8082872da136 (patch) | |
| tree | f827ca09e20224a0622aa816ead526f6d9e80709 /drivers/crypto/rockchip/rk3288_crypto.c | |
| parent | 1d5449445bd0afbc003518543873c7198a09728b (diff) | |
| download | linux-641eacd15696a65b08880985701c8082872da136.tar.xz | |
crypto: rockchip - move the crypto completion from interrupt context
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>
Diffstat (limited to 'drivers/crypto/rockchip/rk3288_crypto.c')
| -rw-r--r-- | drivers/crypto/rockchip/rk3288_crypto.c | 39 |
1 files changed, 28 insertions, 11 deletions
diff --git a/drivers/crypto/rockchip/rk3288_crypto.c b/drivers/crypto/rockchip/rk3288_crypto.c index d0f80c6241f9..c2b1dd70f9f7 100644 --- a/drivers/crypto/rockchip/rk3288_crypto.c +++ b/drivers/crypto/rockchip/rk3288_crypto.c @@ -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; } |