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authorNicolas Pitre <nicolas.pitre@linaro.org>2017-04-13 01:37:14 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-04-18 19:01:52 +0300
commit0c688614dcce84dfdbb305fd1c399c06cecea745 (patch)
tree5d96d52fe1b750645adb8c9b433bb98e6c801015
parent72f1b85a045e3db4d21e9531bdc605157fa224a7 (diff)
downloadlinux-0c688614dcce84dfdbb305fd1c399c06cecea745.tar.xz
console: move console_init() out of tty_io.c
All the console driver handling code lives in printk.c. Move console_init() there as well so console support can still be used when the TTY code is configured out. No logical changes from this patch. Signed-off-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/tty/tty_io.c24
-rw-r--r--include/linux/console.h2
-rw-r--r--include/linux/tty.h7
-rw-r--r--init/main.c2
-rw-r--r--kernel/printk/printk.c24
5 files changed, 31 insertions, 28 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index dd0c1aa60402..8244b6199784 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -3584,30 +3584,6 @@ void tty_default_fops(struct file_operations *fops)
*fops = tty_fops;
}
-/*
- * Initialize the console device. This is called *early*, so
- * we can't necessarily depend on lots of kernel help here.
- * Just do some early initializations, and do the complex setup
- * later.
- */
-void __init console_init(void)
-{
- initcall_t *call;
-
- /* Setup the default TTY line discipline. */
- n_tty_init();
-
- /*
- * set up the console device so that later boot sequences can
- * inform about problems etc..
- */
- call = __con_initcall_start;
- while (call < __con_initcall_end) {
- (*call)();
- call++;
- }
-}
-
static char *tty_devnode(struct device *dev, umode_t *mode)
{
if (!mode)
diff --git a/include/linux/console.h b/include/linux/console.h
index 5949d1855589..b8920a031a3e 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -212,4 +212,6 @@ extern bool vgacon_text_force(void);
static inline bool vgacon_text_force(void) { return false; }
#endif
+extern void console_init(void);
+
#endif /* _LINUX_CONSOLE_H */
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 1017e904c0a3..f1106d7c73b6 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -390,7 +390,6 @@ static inline bool tty_throttled(struct tty_struct *tty)
}
#ifdef CONFIG_TTY
-extern void console_init(void);
extern void tty_kref_put(struct tty_struct *tty);
extern struct pid *tty_get_pgrp(struct tty_struct *tty);
extern void tty_vhangup_self(void);
@@ -402,8 +401,6 @@ extern struct tty_struct *get_current_tty(void);
extern int __init tty_init(void);
extern const char *tty_name(const struct tty_struct *tty);
#else
-static inline void console_init(void)
-{ }
static inline void tty_kref_put(struct tty_struct *tty)
{ }
static inline struct pid *tty_get_pgrp(struct tty_struct *tty)
@@ -669,7 +666,11 @@ extern int tty_ldisc_receive_buf(struct tty_ldisc *ld, const unsigned char *p,
/* n_tty.c */
extern void n_tty_inherit_ops(struct tty_ldisc_ops *ops);
+#ifdef CONFIG_TTY
extern void __init n_tty_init(void);
+#else
+static inline void n_tty_init(void) { }
+#endif
/* tty_audit.c */
#ifdef CONFIG_AUDIT
diff --git a/init/main.c b/init/main.c
index b0c11cbf5ddf..cfb7e6821b85 100644
--- a/init/main.c
+++ b/init/main.c
@@ -27,7 +27,7 @@
#include <linux/initrd.h>
#include <linux/bootmem.h>
#include <linux/acpi.h>
-#include <linux/tty.h>
+#include <linux/console.h>
#include <linux/nmi.h>
#include <linux/percpu.h>
#include <linux/kmod.h>
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 2984fb0f0257..3a0940652660 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2611,6 +2611,30 @@ int unregister_console(struct console *console)
EXPORT_SYMBOL(unregister_console);
/*
+ * Initialize the console device. This is called *early*, so
+ * we can't necessarily depend on lots of kernel help here.
+ * Just do some early initializations, and do the complex setup
+ * later.
+ */
+void __init console_init(void)
+{
+ initcall_t *call;
+
+ /* Setup the default TTY line discipline. */
+ n_tty_init();
+
+ /*
+ * set up the console device so that later boot sequences can
+ * inform about problems etc..
+ */
+ call = __con_initcall_start;
+ while (call < __con_initcall_end) {
+ (*call)();
+ call++;
+ }
+}
+
+/*
* Some boot consoles access data that is in the init section and which will
* be discarded after the initcalls have been run. To make sure that no code
* will access this data, unregister the boot consoles in a late initcall.