On Tue, Jul 22, 2008 at 11:53:54AM +0100, Alan Cox wrote:
>> Signed-off-by: Eric Sesterhenn <[EMAIL PROTECTED]>
>>
>> --- linux-2.6/arch/um/drivers/line.c.orig 2008-07-22 12:06:17.000000000
>> +0200
>> +++ linux-2.6/arch/um/drivers/line.c 2008-07-22 12:06:49.000000000 +0200
>> @@ -362,10 +362,8 @@ static irqreturn_t line_write_interrupt(
>> if (tty == NULL)
>> return IRQ_NONE;
>>
>> - if (test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags) &&
>> - (tty->ldisc.write_wakeup != NULL))
>> - (tty->ldisc.write_wakeup)(tty);
>> -
>> + if (test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags))
>> + tty_wakeup(tty);
>
>Sorry I should have been clearer - you don't want the test_bit either.
>
What about the below one?
Signed-off-by: WANG Cong <[EMAIL PROTECTED]>
---
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 5047490..d741f35 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -362,19 +362,7 @@ static irqreturn_t line_write_interrupt(int irq, void
*data)
if (tty == NULL)
return IRQ_NONE;
- if (test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags) &&
- (tty->ldisc.write_wakeup != NULL))
- (tty->ldisc.write_wakeup)(tty);
-
- /*
- * BLOCKING mode
- * In blocking mode, everything sleeps on tty->write_wait.
- * Sleeping in the console driver would break non-blocking
- * writes.
- */
-
- if (waitqueue_active(&tty->write_wait))
- wake_up_interruptible(&tty->write_wait);
+ tty_wakeup(tty);
return IRQ_HANDLED;
}
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