ivtv: use kthread_worker instead of workqueue

Upcoming workqueue updates will no longer guarantee fixed workqueue to
worker kthread association, so giving RT priority to the irq worker
won't work.  Use kthread_worker which guarantees specific kthread
association instead.  This also makes setting the priority cleaner.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Andy Walls <awalls@md.metrocast.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: ivtv-devel@ivtvdriver.org
Cc: linux-media@vger.kernel.org

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/media/video/ivtv/ivtv-driver.h b/drivers/media/video/ivtv/ivtv-driver.h
index 5b45fd2b2645..51f7f2a9cf5e 100644
--- a/drivers/media/video/ivtv/ivtv-driver.h
+++ b/drivers/media/video/ivtv/ivtv-driver.h
@@ -51,7 +51,7 @@
 #include <linux/unistd.h>
 #include <linux/pagemap.h>
 #include <linux/scatterlist.h>
-#include <linux/workqueue.h>
+#include <linux/kthread.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
 #include <asm/uaccess.h>
@@ -257,7 +257,6 @@ struct ivtv_mailbox_data {
 #define IVTV_F_I_DEC_PAUSED        20   /* the decoder is paused */
 #define IVTV_F_I_INITED            21   /* set after first open */
 #define IVTV_F_I_FAILED            22   /* set if first open failed */
-#define IVTV_F_I_WORK_INITED       23   /* worker thread was initialized */
 
 /* Event notifications */
 #define IVTV_F_I_EV_DEC_STOPPED    28   /* decoder stopped event */
@@ -663,8 +662,9 @@ struct ivtv {
         /* Interrupts & DMA */
         u32 irqmask;                    /* active interrupts */
         u32 irq_rr_idx;                 /* round-robin stream index */
-        struct workqueue_struct *irq_work_queues;       /* workqueue for PIO/YUV/VBI actions */
-        struct work_struct irq_work_queue;              /* work entry */
+        struct kthread_worker irq_worker;               /* kthread worker for PIO/YUV/VBI actions */
+        struct task_struct *irq_worker_task;            /* task for irq_worker */
+        struct kthread_work irq_work;   /* kthread work entry */
         spinlock_t dma_reg_lock;        /* lock access to DMA engine registers */
         int cur_dma_stream;             /* index of current stream doing DMA (-1 if none) */
         int cur_pio_stream;             /* index of current stream doing PIO (-1 if none) */