[PATCH] Char: moxa, remove hangup bottomhalf

Call tty_hangup directly, we do not need a bottomhalf for this.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 22 deletions

diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index 84797a090a97..ef2558f5a3fc 100644
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -159,7 +159,6 @@ struct moxa_str {
         int cflag;
         wait_queue_head_t open_wait;
         wait_queue_head_t close_wait;
-        struct work_struct tqueue;
 };
 
 struct mxser_mstatus {
@@ -178,9 +177,6 @@ static struct mxser_mstatus GMStatus[MAX_PORTS];
 #define EMPTYWAIT       0x4
 #define THROTTLE        0x8
 
-/* event */
-#define MOXA_EVENT_HANGUP       1
-
 #define SERIAL_DO_RESTART
 
 
@@ -213,7 +209,6 @@ module_param(verbose, bool, 0644);
 /*
  * static functions:
  */
-static void do_moxa_softint(struct work_struct *);
 static int moxa_open(struct tty_struct *, struct file *);
 static void moxa_close(struct tty_struct *, struct file *);
 static int moxa_write(struct tty_struct *, const unsigned char *, int);
@@ -354,7 +349,6 @@ static int __init moxa_init(void)
         for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
                 ch->type = PORT_16550A;
                 ch->port = i;
-                INIT_WORK(&ch->tqueue, do_moxa_softint);
                 ch->close_delay = 5 * HZ / 10;
                 ch->closing_wait = 30 * HZ;
                 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
@@ -482,20 +476,6 @@ static void __exit moxa_exit(void)
 module_init(moxa_init);
 module_exit(moxa_exit);
 
-static void do_moxa_softint(struct work_struct *work)
-{
-        struct moxa_str *ch = container_of(work, struct moxa_str, tqueue);
-        struct tty_struct *tty;
-
-        if (ch && (tty = ch->tty)) {
-                if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) {
-                        tty_hangup(tty);        /* FIXME: module removal race here - AKPM */
-                        wake_up_interruptible(&ch->open_wait);
-                        ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
-                }
-        }
-}
-
 static int moxa_open(struct tty_struct *tty, struct file *filp)
 {
         struct moxa_str *ch;
@@ -908,8 +888,9 @@ static void moxa_poll(unsigned long ignored)
                                         if (MoxaPortDCDON(ch->port))
                                                 wake_up_interruptible(&ch->open_wait);
                                         else {
-                                                set_bit(MOXA_EVENT_HANGUP, &ch->event);
-                                                schedule_work(&ch->tqueue);
+                                                tty_hangup(tp);
+                                                wake_up_interruptible(&ch->open_wait);
+                                                ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
                                         }
                                 }
                         }