tty: Split tty_port into its own file

Not much in it yet but this will grow a lot

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 77ea41b..1a4247d 100644 (file)
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -7,7 +7,7 @@
 #
 FONTMAPFILE = cp437.uni
 
-obj-y   += mem.o random.o tty_io.o n_tty.o tty_ioctl.o tty_ldisc.o tty_buffer.o
+obj-y   += mem.o random.o tty_io.o n_tty.o tty_ioctl.o tty_ldisc.o tty_buffer.o tty_port.o
 
 obj-$(CONFIG_LEGACY_PTYS)      += pty.o
 obj-$(CONFIG_UNIX98_PTYS)      += pty.o

diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 3a72693..7323168 100644 (file)
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1139,42 +1139,6 @@ ssize_t redirected_tty_write(struct file *file, const char __user *buf,
        return tty_write(file, buf, count, ppos);
 }
 
-void tty_port_init(struct tty_port *port)
-{
-       memset(port, 0, sizeof(*port));
-       init_waitqueue_head(&port->open_wait);
-       init_waitqueue_head(&port->close_wait);
-       mutex_init(&port->mutex);
-       port->close_delay = (50 * HZ) / 100;
-       port->closing_wait = (3000 * HZ) / 100;
-}
-EXPORT_SYMBOL(tty_port_init);
-
-int tty_port_alloc_xmit_buf(struct tty_port *port)
-{
-       /* We may sleep in get_zeroed_page() */
-       mutex_lock(&port->mutex);
-       if (port->xmit_buf == NULL)
-               port->xmit_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL);
-       mutex_unlock(&port->mutex);
-       if (port->xmit_buf == NULL)
-               return -ENOMEM;
-       return 0;
-}
-EXPORT_SYMBOL(tty_port_alloc_xmit_buf);
-
-void tty_port_free_xmit_buf(struct tty_port *port)
-{
-       mutex_lock(&port->mutex);
-       if (port->xmit_buf != NULL) {
-               free_page((unsigned long)port->xmit_buf);
-               port->xmit_buf = NULL;
-       }
-       mutex_unlock(&port->mutex);
-}
-EXPORT_SYMBOL(tty_port_free_xmit_buf);
-
-
 static char ptychar[] = "pqrstuvwxyzabcde";
 
 /**

diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c
new file mode 100644 (file)
index 0000000..6fadb19
--- /dev/null
+++ b/drivers/char/tty_port.c
@@ -0,0 +1,55 @@
+/*
+ * Tty port functions
+ */
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/timer.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/wait.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+
+void tty_port_init(struct tty_port *port)
+{
+       memset(port, 0, sizeof(*port));
+       init_waitqueue_head(&port->open_wait);
+       init_waitqueue_head(&port->close_wait);
+       mutex_init(&port->mutex);
+       port->close_delay = (50 * HZ) / 100;
+       port->closing_wait = (3000 * HZ) / 100;
+}
+EXPORT_SYMBOL(tty_port_init);
+
+int tty_port_alloc_xmit_buf(struct tty_port *port)
+{
+       /* We may sleep in get_zeroed_page() */
+       mutex_lock(&port->mutex);
+       if (port->xmit_buf == NULL)
+               port->xmit_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL);
+       mutex_unlock(&port->mutex);
+       if (port->xmit_buf == NULL)
+               return -ENOMEM;
+       return 0;
+}
+EXPORT_SYMBOL(tty_port_alloc_xmit_buf);
+
+void tty_port_free_xmit_buf(struct tty_port *port)
+{
+       mutex_lock(&port->mutex);
+       if (port->xmit_buf != NULL) {
+               free_page((unsigned long)port->xmit_buf);
+               port->xmit_buf = NULL;
+       }
+       mutex_unlock(&port->mutex);
+}
+EXPORT_SYMBOL(tty_port_free_xmit_buf);
+
+