V4L/DVB (8331): cx18: Add locking for struct cx18 GPIO state variables

cx18: Add locking for struct cx18 GPIO state variables in
anticpation of adding IR microcontroller reset support for
use by external IR modules.

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/media/video/cx18/cx18-driver.c b/drivers/media/video/cx18/cx18-driver.c
index e73de6252257..22434aadde31 100644
--- a/drivers/media/video/cx18/cx18-driver.c
+++ b/drivers/media/video/cx18/cx18-driver.c
@@ -421,6 +421,7 @@ static int __devinit cx18_init_struct1(struct cx18 *cx)
         mutex_init(&cx->serialize_lock);
         mutex_init(&cx->i2c_bus_lock[0]);
         mutex_init(&cx->i2c_bus_lock[1]);
+        mutex_init(&cx->gpio_lock);
 
         spin_lock_init(&cx->lock);
         spin_lock_init(&cx->dma_reg_lock);