diff options
| -rw-r--r-- | drivers/crypto/hifn_795x.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c index 391c20a3dff8..7b7c85439c33 100644 --- a/drivers/crypto/hifn_795x.c +++ b/drivers/crypto/hifn_795x.c @@ -26,6 +26,7 @@ #include <linux/delay.h> #include <linux/mm.h> #include <linux/highmem.h> +#include <linux/interrupt.h> #include <linux/crypto.h> #include <crypto/algapi.h> @@ -426,6 +427,8 @@ struct hifn_device u8 snum; + struct tasklet_struct tasklet; + struct crypto_queue queue; struct list_head alg_list; }; @@ -1879,7 +1882,7 @@ static irqreturn_t hifn_interrupt(int irq, void *data) hifn_write_1(dev, HIFN_1_DMA_IER, dev->dmareg); } - hifn_check_for_completion(dev, 0); + tasklet_schedule(&dev->tasklet); hifn_clear_rings(dev); return IRQ_HANDLED; @@ -2408,6 +2411,19 @@ err_out_exit: return err; } +static void hifn_tasklet_callback(unsigned long data) +{ + struct hifn_device *dev = (struct hifn_device *)data; + + /* + * This is ok to call this without lock being held, + * althogh it modifies some parameters used in parallel, + * (like dev->success), but they are used in process + * context or update is atomic (like setting dev->sa[i] to NULL). + */ + hifn_check_for_completion(dev, 0); +} + static int hifn_probe(struct pci_dev *pdev, const struct pci_device_id *id) { int err, i; @@ -2489,6 +2505,8 @@ static int hifn_probe(struct pci_dev *pdev, const struct pci_device_id *id) pci_set_drvdata(pdev, dev); + tasklet_init(&dev->tasklet, hifn_tasklet_callback, (unsigned long)dev); + crypto_init_queue(&dev->queue, 1); err = request_irq(dev->irq, hifn_interrupt, IRQF_SHARED, dev->name, dev); @@ -2524,6 +2542,7 @@ err_out_stop_device: hifn_stop_device(dev); err_out_free_irq: free_irq(dev->irq, dev->name); + tasklet_kill(&dev->tasklet); err_out_free_desc: pci_free_consistent(pdev, sizeof(struct hifn_dma), dev->desc_virt, dev->desc_dma); @@ -2563,6 +2582,7 @@ static void hifn_remove(struct pci_dev *pdev) hifn_stop_device(dev); free_irq(dev->irq, dev->name); + tasklet_kill(&dev->tasklet); hifn_flush(dev); |