um: switch line.c tty drivers to dynamic device creation

[firefly-linux-kernel-4.4.55.git] / arch / um / drivers / line.h

diff --git a/arch/um/drivers/line.h b/arch/um/drivers/line.h
index 471f477b271ed4d57933d50462691566e9d07bb6..e3f86065e0496da9494614c8ef206dbee990b0ad 100644 (file)
--- a/arch/um/drivers/line.h
+++ b/arch/um/drivers/line.h
@@ -15,7 +15,7 @@
 #include "chan_user.h"
 #include "mconsole_kern.h"
 
-/* There's only one modifiable field in this - .mc.list */
+/* There's only two modifiable fields in this - .mc.list and .driver */
 struct line_driver {
        const char *name;
        const char *device_name;
@@ -28,6 +28,7 @@ struct line_driver {
        const int write_irq;
        const char *write_irq_name;
        struct mc_device mc;
+       struct tty_driver *driver;
 };
 
 struct line {
@@ -78,9 +79,9 @@ extern char *add_xterm_umid(char *base);
 extern int line_setup_irq(int fd, int input, int output, struct line *line,
                          void *data);
 extern void line_close_chan(struct line *line);
-extern struct tty_driver *register_lines(struct line_driver *line_driver,
-                                        const struct tty_operations *driver,
-                                        struct line *lines, int nlines);
+extern int register_lines(struct line_driver *line_driver,
+                         const struct tty_operations *driver,
+                         struct line *lines, int nlines);
 extern void lines_init(struct line *lines, int nlines, struct chan_opts *opts);
 extern void close_lines(struct line *lines, int nlines);