V4L/DVB: cx23885: Protect PCI interrupt mask manipulations with a spinlock
This patch encapsulates access to the PCI_INT_MSK register and
dev->pci_irqmask variable and protects them with a spinlock.
This is needed because both the hard IRQ handler and a workhandler
will need to manipulate the mask to disable the AV_CORE interrupt.
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/cx23885/cx23885-video.c b/drivers/media/video/cx23885/cx23885-video.c
index 2519455..da66e5f 100644
--- a/drivers/media/video/cx23885/cx23885-video.c
+++ b/drivers/media/video/cx23885/cx23885-video.c
@@ -441,7 +441,7 @@
q->count = 1;
/* enable irq */
- cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | 0x01);
+ cx23885_irq_add_enable(dev, 0x01);
cx_set(VID_A_INT_MSK, 0x000011);
/* start dma */
@@ -1465,7 +1465,7 @@
void cx23885_video_unregister(struct cx23885_dev *dev)
{
dprintk(1, "%s()\n", __func__);
- cx_clear(PCI_INT_MSK, 1);
+ cx23885_irq_remove(dev, 0x01);
if (dev->video_dev) {
if (video_is_registered(dev->video_dev))
@@ -1502,7 +1502,8 @@
VID_A_DMA_CTL, 0x11, 0x00);
/* Don't enable VBI yet */
- cx_set(PCI_INT_MSK, 1);
+
+ cx23885_irq_add_enable(dev, 0x01);
if (TUNER_ABSENT != dev->tuner_type) {
struct v4l2_subdev *sd = NULL;