V4L/DVB (9722): cx18: Convert per stream queue spinlocks into mutexes
Convert the per stream queue spinlocks into mutexes. All queue
manipulation happens via the work queue or system calls into the driver, and
not in an interrupt context. This reduces the amout of time the cx18 driver
keeps interrupts disabled.
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/cx18/cx18-driver.h b/drivers/media/video/cx18/cx18-driver.h
index f8929eb..041fa66 100644
--- a/drivers/media/video/cx18/cx18-driver.h
+++ b/drivers/media/video/cx18/cx18-driver.h
@@ -271,7 +271,7 @@
unsigned mdl_offset;
u32 id;
- spinlock_t qlock; /* locks access to the queues */
+ struct mutex qlock; /* locks access to the queues */
unsigned long s_flags; /* status flags, see above */
int dma; /* can be PCI_DMA_TODEVICE,
PCI_DMA_FROMDEVICE or