V4L/DVB (13712): [Mantis] Add locking for concurrent access

[safe/jmp/linux-2.6] / drivers / media / dvb / mantis / mantis_common.h

diff --git a/drivers/media/dvb/mantis/mantis_common.h b/drivers/media/dvb/mantis/mantis_common.h
index 197393e..e354e76 100644 (file)
--- a/drivers/media/dvb/mantis/mantis_common.h
+++ b/drivers/media/dvb/mantis/mantis_common.h
@@ -25,6 +25,7 @@
 #include <linux/moduleparam.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
+#include <linux/mutex.h>
 
 #include "dvbdev.h"
 #include "dvb_demux.h"
@@ -109,6 +110,7 @@ struct mantis_pci {
        struct i2c_adapter      adapter;
        int                     i2c_rc;
        wait_queue_head_t       i2c_wq;
+       struct mutex            i2c_lock;
 
        /*      DVB stuff               */
        struct dvb_adapter      dvb_adapter;