TTY: bfin_jtag_comm, add tty_port

And use open count from there. Switch to tty from there will follow.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: uclinux-dist-devel@blackfin.uclinux.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/bfin_jtag_comm.c b/drivers/tty/bfin_jtag_comm.c
index 946f799861f54fe19926ebc06f6e90d2857e5990..d81013c3d2293449d8606b3455f6ceef3533005f 100644 (file)
--- a/drivers/tty/bfin_jtag_comm.c
+++ b/drivers/tty/bfin_jtag_comm.c
@@ -63,8 +63,8 @@ static inline uint32_t bfin_write_emudat_chars(char a, char b, char c, char d)
 static struct tty_driver *bfin_jc_driver;
 static struct task_struct *bfin_jc_kthread;
 static struct tty_struct * volatile bfin_jc_tty;
-static unsigned long bfin_jc_count;
 static DEFINE_MUTEX(bfin_jc_tty_mutex);
+static struct tty_port port;
 static volatile struct circ_buf bfin_jc_write_buf;
 
 static int
@@ -150,8 +150,7 @@ static int
 bfin_jc_open(struct tty_struct *tty, struct file *filp)
 {
        mutex_lock(&bfin_jc_tty_mutex);
-       pr_debug("open %lu\n", bfin_jc_count);
-       ++bfin_jc_count;
+       port.count++;
        bfin_jc_tty = tty;
        wake_up_process(bfin_jc_kthread);
        mutex_unlock(&bfin_jc_tty_mutex);
@@ -162,8 +161,7 @@ static void
 bfin_jc_close(struct tty_struct *tty, struct file *filp)
 {
        mutex_lock(&bfin_jc_tty_mutex);
-       pr_debug("close %lu\n", bfin_jc_count);
-       if (--bfin_jc_count == 0)
+       if (--port.count == 0)
                bfin_jc_tty = NULL;
        wake_up_process(bfin_jc_kthread);
        mutex_unlock(&bfin_jc_tty_mutex);
@@ -242,6 +240,8 @@ static int __init bfin_jc_init(void)
 {
        int ret;
 
+       tty_port_init(&port);
+
        bfin_jc_kthread = kthread_create(bfin_jc_emudat_manager, NULL, DRV_NAME);
        if (IS_ERR(bfin_jc_kthread))
                return PTR_ERR(bfin_jc_kthread);