The patch titled
Char: mxser_new, remove tty_wakeup bottomhalf
has been added to the -mm tree. Its filename is
char-mxser_new-remove-tty_wakeup-bottomhalf.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Char: mxser_new, remove tty_wakeup bottomhalf
From: Jiri Slaby <jirislaby@xxxxxxxxx>
It's safe to call tty_wakeup from irq context. Do not schedule it for later
calling.
Signed-off-by: Jiri Slaby <jirislaby@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/char/mxser_new.c | 26 ++++++--------------------
1 files changed, 6 insertions(+), 20 deletions(-)
diff -puN drivers/char/mxser_new.c~char-mxser_new-remove-tty_wakeup-bottomhalf drivers/char/mxser_new.c
--- a/drivers/char/mxser_new.c~char-mxser_new-remove-tty_wakeup-bottomhalf
+++ a/drivers/char/mxser_new.c
@@ -269,7 +269,6 @@ struct mxser_port {
struct mxser_mon mon_data;
spinlock_t slock;
- struct work_struct tqueue;
wait_queue_head_t open_wait;
wait_queue_head_t delta_msr_wait;
};
@@ -355,15 +354,6 @@ static void process_txrx_fifo(struct mxs
}
}
-static void mxser_do_softint(struct work_struct *work)
-{
- struct mxser_port *info = container_of(work, struct mxser_port, tqueue);
- struct tty_struct *tty = info->tty;
-
- if (test_and_clear_bit(MXSER_EVENT_TXLOW, &info->event))
- tty_wakeup(tty);
-}
-
static unsigned char mxser_get_msr(int baseaddr, int mode, int port)
{
unsigned char status = 0;
@@ -607,8 +597,8 @@ static int mxser_change_speed(struct mxs
outb(info->IER, info->ioaddr +
UART_IER);
}
- set_bit(MXSER_EVENT_TXLOW, &info->event);
- schedule_work(&info->tqueue); }
+ tty_wakeup(info->tty);
+ }
} else {
if (!(status & UART_MSR_CTS)) {
info->tty->hw_stopped = 1;
@@ -703,7 +693,6 @@ static void mxser_check_modem_status(str
if ((port->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
if (status & UART_MSR_DCD)
wake_up_interruptible(&port->open_wait);
- schedule_work(&port->tqueue);
}
if (port->flags & ASYNC_CTS_FLOW) {
@@ -719,8 +708,7 @@ static void mxser_check_modem_status(str
outb(port->IER, port->ioaddr +
UART_IER);
}
- set_bit(MXSER_EVENT_TXLOW, &port->event);
- schedule_work(&port->tqueue);
+ tty_wakeup(port->tty);
}
} else {
if (!(status & UART_MSR_CTS)) {
@@ -2220,10 +2208,9 @@ static void mxser_transmit_chars(struct
port->mon_data.up_txcnt += (cnt - port->xmit_cnt);
port->icount.tx += (cnt - port->xmit_cnt);
- if (port->xmit_cnt < WAKEUP_CHARS) {
- set_bit(MXSER_EVENT_TXLOW, &port->event);
- schedule_work(&port->tqueue);
- }
+ if (port->xmit_cnt < WAKEUP_CHARS)
+ tty_wakeup(port->tty);
+
if (port->xmit_cnt <= 0) {
port->IER &= ~UART_IER_THRI;
outb(port->IER, port->ioaddr + UART_IER);
@@ -2400,7 +2387,6 @@ static int __devinit mxser_initbrd(struc
info->custom_divisor = info->baud_base * 16;
info->close_delay = 5 * HZ / 10;
info->closing_wait = 30 * HZ;
- INIT_WORK(&info->tqueue, mxser_do_softint);
info->normal_termios = mxvar_sdriver->init_termios;
init_waitqueue_head(&info->open_wait);
init_waitqueue_head(&info->delta_msr_wait);
_
Patches currently in -mm which might be from jirislaby@xxxxxxxxx are
add-gitignore-file-for-relocs-in-arch-i386-fix.patch
char-mxser-fix-oops-when-removing-opened.patch
char-isicom-eliminate-spinlock-recursion.patch
git-input.patch
char-tty-delete-wake_up_interruptible-after-tty_wakeup.patch
char-isicom-remove-tty_hangwakeup-bottomhalves.patch
mxser-remove-ambiguous-redefinition-of-init_work.patch
make-drivers-char-mxser_newcmxser_hangup-static.patch
char-isicom-fix-locking-in-isr.patch
char-isicom-augment-card_reset.patch
char-isicom-check-card-state-in-isr.patch
char-isicom-support-higher-rates.patch
char-isicom-correct-probing-removing.patch
char-tty_wakeup-cleanup.patch
char-mxser_new-mark-init-functions.patch
char-mxser_new-remove-useless-spinlock.patch
char-serial167-cleanup.patch
char-n_r3964-cleanup.patch
char-mxser_new-remove-unused-stuff.patch
char-mxser-obsolete-old-nonexperimental-new.patch
char-mxser_new-remove-tty_wakeup-bottomhalf.patch
char-mxser_new-clean-request_irq-call.patch
shrink_slab-handle-bad-shrinkers.patch
-
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