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path: root/drivers/media/video/ivtv/ivtv-driver.c
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Diffstat (limited to 'drivers/media/video/ivtv/ivtv-driver.c')
-rw-r--r--drivers/media/video/ivtv/ivtv-driver.c26
1 files changed, 16 insertions, 10 deletions
diff --git a/drivers/media/video/ivtv/ivtv-driver.c b/drivers/media/video/ivtv/ivtv-driver.c
index 90daa6e751d8..07c5c18a25cb 100644
--- a/drivers/media/video/ivtv/ivtv-driver.c
+++ b/drivers/media/video/ivtv/ivtv-driver.c
@@ -705,6 +705,8 @@ done:
*/
static int __devinit ivtv_init_struct1(struct ivtv *itv)
{
+ struct sched_param param = { .sched_priority = 99 };
+
itv->base_addr = pci_resource_start(itv->pdev, 0);
itv->enc_mbox.max_mbox = 2; /* the encoder has 3 mailboxes (0-2) */
itv->dec_mbox.max_mbox = 1; /* the decoder has 2 mailboxes (0-1) */
@@ -716,13 +718,17 @@ static int __devinit ivtv_init_struct1(struct ivtv *itv)
spin_lock_init(&itv->lock);
spin_lock_init(&itv->dma_reg_lock);
- itv->irq_work_queues = create_singlethread_workqueue(itv->v4l2_dev.name);
- if (itv->irq_work_queues == NULL) {
- IVTV_ERR("Could not create ivtv workqueue\n");
+ init_kthread_worker(&itv->irq_worker);
+ itv->irq_worker_task = kthread_run(kthread_worker_fn, &itv->irq_worker,
+ itv->v4l2_dev.name);
+ if (IS_ERR(itv->irq_worker_task)) {
+ IVTV_ERR("Could not create ivtv task\n");
return -1;
}
+ /* must use the FIFO scheduler as it is realtime sensitive */
+ sched_setscheduler(itv->irq_worker_task, SCHED_FIFO, &param);
- INIT_WORK(&itv->irq_work_queue, ivtv_irq_work_handler);
+ init_kthread_work(&itv->irq_work, ivtv_irq_work_handler);
/* start counting open_id at 1 */
itv->open_id = 1;
@@ -1006,7 +1012,7 @@ static int __devinit ivtv_probe(struct pci_dev *pdev,
/* PCI Device Setup */
retval = ivtv_setup_pci(itv, pdev, pci_id);
if (retval == -EIO)
- goto free_workqueue;
+ goto free_worker;
if (retval == -ENXIO)
goto free_mem;
@@ -1218,8 +1224,8 @@ free_mem:
release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
if (itv->has_cx23415)
release_mem_region(itv->base_addr + IVTV_DECODER_OFFSET, IVTV_DECODER_SIZE);
-free_workqueue:
- destroy_workqueue(itv->irq_work_queues);
+free_worker:
+ kthread_stop(itv->irq_worker_task);
err:
if (retval == 0)
retval = -ENODEV;
@@ -1363,9 +1369,9 @@ static void ivtv_remove(struct pci_dev *pdev)
ivtv_set_irq_mask(itv, 0xffffffff);
del_timer_sync(&itv->dma_timer);
- /* Stop all Work Queues */
- flush_workqueue(itv->irq_work_queues);
- destroy_workqueue(itv->irq_work_queues);
+ /* Kill irq worker */
+ flush_kthread_worker(&itv->irq_worker);
+ kthread_stop(itv->irq_worker_task);
ivtv_streams_cleanup(itv, 1);
ivtv_udma_free(itv);