diff options
Diffstat (limited to 'arch/um/include/line.h')
| -rw-r--r-- | arch/um/include/line.h | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/um/include/line.h b/arch/um/include/line.h index 5f232ae89fbb..b79643eeee08 100644 --- a/arch/um/include/line.h +++ b/arch/um/include/line.h @@ -11,6 +11,7 @@ #include "linux/tty.h" #include "linux/interrupt.h" #include "linux/spinlock.h" +#include "linux/mutex.h" #include "chan_user.h" #include "mconsole_kern.h" @@ -32,15 +33,17 @@ struct line_driver { struct line { struct tty_struct *tty; + spinlock_t count_lock; + int valid; + + struct mutex open_mutex; char *init_str; int init_pri; struct list_head chan_list; - int valid; - int count; - int throttled; + /*This lock is actually, mostly, local to*/ spinlock_t lock; - + int throttled; /* Yes, this is a real circular buffer. * XXX: And this should become a struct kfifo! * @@ -57,7 +60,8 @@ struct line { }; #define LINE_INIT(str, d) \ - { .init_str = str, \ + { .count_lock = SPIN_LOCK_UNLOCKED, \ + .init_str = str, \ .init_pri = INIT_STATIC, \ .valid = 1, \ .lock = SPIN_LOCK_UNLOCKED, \ |