[PATCH] Char: tty_wakeup cleanup
tty_wakeup cleanup
- remove wake_up_interruptible(&tty->write_wait) surrounding
tty_wakup(tty);
- substitute tty->ldisc.write_wakeup(tty) + wake_up() by tty_wakeup(tty);
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Acked-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index feb4ac8..39880eb 100644
--- a/drivers/char/amiserial.c
+++ b/drivers/char/amiserial.c
@@ -527,10 +527,8 @@
if (!tty)
return;
- if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) {
+ if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event))
tty_wakeup(tty);
- wake_up_interruptible(&tty->write_wait);
- }
}
/*
@@ -968,7 +966,6 @@
local_irq_save(flags);
info->xmit.head = info->xmit.tail = 0;
local_irq_restore(flags);
- wake_up_interruptible(&tty->write_wait);
tty_wakeup(tty);
}
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index 3ffa080..363beb1 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -4488,7 +4488,6 @@
CY_UNLOCK(info, flags);
}
tty_wakeup(tty);
- wake_up_interruptible(&tty->write_wait);
} /* cy_flush_buffer */
/*
diff --git a/drivers/char/epca.c b/drivers/char/epca.c
index a0f822c..88fc24f 100644
--- a/drivers/char/epca.c
+++ b/drivers/char/epca.c
@@ -844,7 +844,6 @@
fepcmd(ch, STOUT, (unsigned) tail, 0, 0, 0);
memoff(ch);
spin_unlock_irqrestore(&epca_lock, flags);
- wake_up_interruptible(&tty->write_wait);
tty_wakeup(tty);
} /* End pc_flush_buffer */
@@ -1795,7 +1794,6 @@
{ /* Begin if LOWWAIT */
ch->statusflags &= ~LOWWAIT;
tty_wakeup(tty);
- wake_up_interruptible(&tty->write_wait);
} /* End if LOWWAIT */
} else if (event & EMPTYTX_IND) { /* Begin EMPTYTX_IND */
/* This event is generated by setup_empty_event */
@@ -1803,7 +1801,6 @@
if (ch->statusflags & EMPTYWAIT) { /* Begin if EMPTYWAIT */
ch->statusflags &= ~EMPTYWAIT;
tty_wakeup(tty);
- wake_up_interruptible(&tty->write_wait);
} /* End if EMPTYWAIT */
} /* End EMPTYTX_IND */
} /* End if valid tty */
diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c
index e769811..337bbcd 100644
--- a/drivers/char/generic_serial.c
+++ b/drivers/char/generic_serial.c
@@ -382,7 +382,6 @@
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
spin_unlock_irqrestore (&port->driver_lock, flags);
- wake_up_interruptible(&tty->write_wait);
tty_wakeup(tty);
func_exit ();
}
diff --git a/drivers/char/ip2/i2lib.c b/drivers/char/ip2/i2lib.c
index 7804576..88b9d33 100644
--- a/drivers/char/ip2/i2lib.c
+++ b/drivers/char/ip2/i2lib.c
@@ -1373,15 +1373,7 @@
ip2trace (CHANN, ITRC_SICMD, 10, 2, tp->flags,
(1 << TTY_DO_WRITE_WAKEUP) );
- wake_up_interruptible ( &tp->write_wait );
- if ( ( tp->flags & (1 << TTY_DO_WRITE_WAKEUP) )
- && tp->ldisc.write_wakeup )
- {
- (tp->ldisc.write_wakeup) ( tp );
-
- ip2trace (CHANN, ITRC_SICMD, 11, 0 );
-
- }
+ tty_wakeup(tp);
}
static inline void
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index 9feb762..43ab9ed 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -1487,7 +1487,6 @@
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
spin_unlock_irqrestore(&card->card_lock, flags);
- wake_up_interruptible(&tty->write_wait);
tty_wakeup(tty);
}
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index 68645d3..7b279d1 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -2424,7 +2424,6 @@
if (tty != NULL) {
tty_wakeup(tty);
EBRDENABLE(brdp);
- wake_up_interruptible(&tty->write_wait);
}
}
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 83f604b..df1e608 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -1254,9 +1254,7 @@
spin_unlock_irqrestore(&info->slock, flags);
/* above added by shinhay */
- wake_up_interruptible(&tty->write_wait);
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup) (tty);
+ tty_wakeup(tty);
}
static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index f108c13..4ab2c98 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -887,10 +887,8 @@
if (debug_level >= DEBUG_LEVEL_BH)
printk("bh_transmit() entry on %s\n", info->device_name);
- if (tty) {
+ if (tty)
tty_wakeup(tty);
- wake_up_interruptible(&tty->write_wait);
- }
}
static void bh_status(MGSLPC_INFO *info)
diff --git a/drivers/char/rio/riointr.c b/drivers/char/rio/riointr.c
index eeda40c..ebc7634 100644
--- a/drivers/char/rio/riointr.c
+++ b/drivers/char/rio/riointr.c
@@ -162,13 +162,8 @@
rio_spin_unlock_irqrestore(&PortP->portSem, flags);
- if (PortP->gs.xmit_cnt <= (PortP->gs.wakeup_chars + 2 * PKT_MAX_DATA_LEN)) {
- rio_dprintk(RIO_DEBUG_INTR, "Waking up.... ldisc:%d (%d/%d)....", (int) (PortP->gs.tty->flags & (1 << TTY_DO_WRITE_WAKEUP)), PortP->gs.wakeup_chars, PortP->gs.xmit_cnt);
- if ((PortP->gs.tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && PortP->gs.tty->ldisc.write_wakeup)
- (PortP->gs.tty->ldisc.write_wakeup) (PortP->gs.tty);
- rio_dprintk(RIO_DEBUG_INTR, "(%d/%d)\n", PortP->gs.wakeup_chars, PortP->gs.xmit_cnt);
- wake_up_interruptible(&PortP->gs.tty->write_wait);
- }
+ if (PortP->gs.xmit_cnt <= (PortP->gs.wakeup_chars + 2 * PKT_MAX_DATA_LEN))
+ tty_wakeup(PortP->gs.tty);
}
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index e2a94bf..7014525 100644
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -1229,7 +1229,6 @@
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
restore_flags(flags);
- wake_up_interruptible(&tty->write_wait);
tty_wakeup(tty);
}
@@ -1570,10 +1569,8 @@
if(!(tty = port->tty))
return;
- if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &port->event)) {
+ if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &port->event))
tty_wakeup(tty);
- wake_up_interruptible(&tty->write_wait);
- }
}
static const struct tty_operations riscom_ops = {
diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index e94a62e..106f225 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -474,7 +474,6 @@
if (info->xmit_cnt < WAKEUP_CHARS) {
tty_wakeup(tty);
- wake_up_interruptible(&tty->write_wait);
#ifdef ROCKETPORT_HAVE_POLL_WAIT
wake_up_interruptible(&tty->poll_wait);
#endif
@@ -1772,7 +1771,6 @@
end:
if (info->xmit_cnt < WAKEUP_CHARS) {
tty_wakeup(tty);
- wake_up_interruptible(&tty->write_wait);
#ifdef ROCKETPORT_HAVE_POLL_WAIT
wake_up_interruptible(&tty->poll_wait);
#endif
@@ -1841,7 +1839,6 @@
info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
spin_unlock_irqrestore(&info->slock, flags);
- wake_up_interruptible(&tty->write_wait);
#ifdef ROCKETPORT_HAVE_POLL_WAIT
wake_up_interruptible(&tty->poll_wait);
#endif
diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index 20946f5..92043c8 100644
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -2350,10 +2350,8 @@
return;
}
- if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &port->event)) {
+ if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &port->event))
tty_wakeup(tty);
- //wake_up_interruptible(&tty->write_wait);
- }
func_exit();
}
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index 3fa625d..bf76db1 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -1148,10 +1148,8 @@
printk( "%s(%d):mgsl_bh_transmit() entry on %s\n",
__FILE__,__LINE__,info->device_name);
- if (tty) {
+ if (tty)
tty_wakeup(tty);
- wake_up_interruptible(&tty->write_wait);
- }
/* if transmitter idle and loopmode_send_done_requested
* then start echoing RxD to TxD
@@ -2340,7 +2338,6 @@
del_timer(&info->tx_timer);
spin_unlock_irqrestore(&info->irq_spinlock,flags);
- wake_up_interruptible(&tty->write_wait);
tty_wakeup(tty);
}
diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index 792c79c..54af763 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -1045,7 +1045,6 @@
info->tx_count = 0;
spin_unlock_irqrestore(&info->lock,flags);
- wake_up_interruptible(&tty->write_wait);
tty_wakeup(tty);
}
@@ -1933,10 +1932,8 @@
struct tty_struct *tty = info->tty;
DBGBH(("%s bh_transmit\n", info->device_name));
- if (tty) {
+ if (tty)
tty_wakeup(tty);
- wake_up_interruptible(&tty->write_wait);
- }
}
static void dsr_change(struct slgt_info *info)
diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index 8f4d67a..ebde4e5 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -1258,7 +1258,6 @@
del_timer(&info->tx_timer);
spin_unlock_irqrestore(&info->lock,flags);
- wake_up_interruptible(&tty->write_wait);
tty_wakeup(tty);
}
@@ -2127,10 +2126,8 @@
printk( "%s(%d):%s bh_transmit() entry\n",
__FILE__,__LINE__,info->device_name);
- if (tty) {
+ if (tty)
tty_wakeup(tty);
- wake_up_interruptible(&tty->write_wait);
- }
}
void bh_status(SLMP_INFO *info)
diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c
index 458b646..f13de20 100644
--- a/drivers/isdn/gigaset/interface.c
+++ b/drivers/isdn/gigaset/interface.c
@@ -599,19 +599,9 @@
static void if_wake(unsigned long data)
{
struct cardstate *cs = (struct cardstate *) data;
- struct tty_struct *tty;
- tty = cs->tty;
- if (!tty)
- return;
-
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup) {
- gig_dbg(DEBUG_IF, "write wakeup call");
- tty->ldisc.write_wakeup(tty);
- }
-
- wake_up_interruptible(&tty->write_wait);
+ if (cs->tty)
+ tty_wakeup(cs->tty);
}
/*** interface to common ***/
diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index fc80afe..ea5f30d 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -1261,7 +1261,6 @@
}
isdn_tty_cleanup_xmit(info);
info->xmit_count = 0;
- wake_up_interruptible(&tty->write_wait);
tty_wakeup(tty);
}
diff --git a/drivers/serial/crisv10.c b/drivers/serial/crisv10.c
index 42b050c..312bef6 100644
--- a/drivers/serial/crisv10.c
+++ b/drivers/serial/crisv10.c
@@ -3173,12 +3173,8 @@
if (!tty)
return;
- if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) {
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
- wake_up_interruptible(&tty->write_wait);
- }
+ if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event))
+ tty_wakeup(tty);
}
static int
@@ -3798,11 +3794,7 @@
info->xmit.head = info->xmit.tail = 0;
restore_flags(flags);
- wake_up_interruptible(&tty->write_wait);
-
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
+ tty_wakeup(tty);
}
/*
diff --git a/drivers/tc/zs.c b/drivers/tc/zs.c
index fc31972..3d72aa5 100644
--- a/drivers/tc/zs.c
+++ b/drivers/tc/zs.c
@@ -626,10 +626,8 @@
if (!tty)
return;
- if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) {
+ if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event))
tty_wakeup(tty);
- wake_up_interruptible(&tty->write_wait);
- }
}
static int zs_startup(struct dec_serial * info)
diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c
index 0b0fb51..d78692c 100644
--- a/drivers/usb/serial/digi_acceleport.c
+++ b/drivers/usb/serial/digi_acceleport.c
@@ -616,15 +616,7 @@
static void digi_wakeup_write( struct usb_serial_port *port )
{
-
- struct tty_struct *tty = port->tty;
-
-
- /* wake up port processes */
- wake_up_interruptible( &port->write_wait );
-
- /* wake up line discipline */
- tty_wakeup(tty);
+ tty_wakeup(port->tty);
}
diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
index da514cb..dd0b66a 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -182,13 +182,8 @@
struct keyspan_pda_private *priv =
container_of(work, struct keyspan_pda_private, wakeup_work);
struct usb_serial_port *port = priv->port;
- struct tty_struct *tty = port->tty;
- /* wake up port processes */
- wake_up_interruptible( &port->write_wait );
-
- /* wake up line discipline */
- tty_wakeup(tty);
+ tty_wakeup(port->tty);
}
static void keyspan_pda_request_unthrottle(struct work_struct *work)
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index 6109c67..2d588fb 100644
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -269,18 +269,8 @@
tty = mos7720_port->port->tty;
- if (tty && mos7720_port->open) {
- /* let the tty driver wakeup if it has a special *
- * write_wakeup function */
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
-
- /* tell the tty driver that something has changed */
- wake_up_interruptible(&tty->write_wait);
- }
-
- /* schedule_work(&mos7720_port->port->work); */
+ if (tty && mos7720_port->open)
+ tty_wakeup(tty);
}
/*
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index b2264a8..c6cca85 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -755,18 +755,8 @@
tty = mos7840_port->port->tty;
- if (tty && mos7840_port->open) {
- /* let the tty driver wakeup if it has a special *
- * write_wakeup function */
-
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP))
- && tty->ldisc.write_wakeup) {
- (tty->ldisc.write_wakeup) (tty);
- }
-
- /* tell the tty driver that something has changed */
- wake_up_interruptible(&tty->write_wait);
- }
+ if (tty && mos7840_port->open)
+ tty_wakeup(tty);
}