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path: root/drivers/s390/char/tape.h
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Diffstat (limited to 'drivers/s390/char/tape.h')
-rw-r--r--drivers/s390/char/tape.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/s390/char/tape.h b/drivers/s390/char/tape.h
index fbe41e0..7a242f0 100644
--- a/drivers/s390/char/tape.h
+++ b/drivers/s390/char/tape.h
@@ -212,6 +212,9 @@ struct tape_device {
struct tape_class_device * nt;
struct tape_class_device * rt;
+ /* Device mutex to serialize tape commands. */
+ struct mutex mutex;
+
/* Device discipline information. */
struct tape_discipline * discipline;
void * discdata;