um: switch line_remove() to setup_one_line()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index ac9bcfb..08c5fba 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -640,14 +640,11 @@
int line_remove(struct line *lines, unsigned int num, int n, char **error_out)
{
- int err;
- char config[sizeof("conxxxx=none\0")];
-
- sprintf(config, "%d=none", n);
- err = line_setup(lines, num, config, error_out);
- if (err >= 0)
- err = 0;
- return err;
+ if (n >= num) {
+ *error_out = "Device number out of range";
+ return -EINVAL;
+ }
+ return setup_one_line(lines, n, "none", INIT_ONE, error_out);
}
struct tty_driver *register_lines(struct line_driver *line_driver,