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um: remove count_lock 

this lock is no longer needed.

Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Richard Weinberger 2012-06-04 21:58:39 +02:00
parent 79e0273d18
commit a84ccab132
2 changed files with 0 additions and 7 deletions
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6
arch/um/drivers/line.c
View File

@ -382,8 +382,6 @@ int setup_one_line(struct line *lines, int n, char *init,
struct tty_driver *driver = line->driver->driver;
int err = -EINVAL;
mutex_lock(&line->count_lock);
if (line->port.count) {
*error_out = "Device is already open";
goto out;
@ -425,7 +423,6 @@ int setup_one_line(struct line *lines, int n, char *init,
}
}
out:
mutex_unlock(&line->count_lock);
return err;
}
@ -513,7 +510,6 @@ int line_get_config(char *name, struct line *lines, unsigned int num, char *str,
line = &lines[dev];
mutex_lock(&line->count_lock);
if (!line->valid)
CONFIG_CHUNK(str, size, n, "none", 1);
else {
@ -525,7 +521,6 @@ int line_get_config(char *name, struct line *lines, unsigned int num, char *str,
tty_kref_put(tty);
}
}
mutex_unlock(&line->count_lock);
return n;
}
@ -578,7 +573,6 @@ int register_lines(struct line_driver *line_driver,
tty_port_init(&lines[i].port);
lines[i].port.ops = &line_port_ops;
spin_lock_init(&lines[i].lock);
mutex_init(&lines[i].count_lock);
lines[i].driver = line_driver;
INIT_LIST_HEAD(&lines[i].chan_list);
}

1
arch/um/drivers/line.h
View File

@ -33,7 +33,6 @@ struct line_driver {
struct line {
struct tty_port port;
struct mutex count_lock;
int valid;
char *init_str;