mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 18:11:56 +00:00
9cfb5c05fe
Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled], We run all interrupt handlers with interrupts disabled and we even check and yell when an interrupt handler returns with interrupts enabled (see commit [b738a50a: genirq: Warn when handler enables interrupts]). So now this flag is a NOOP and can be removed. Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> Acked-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
50 lines
893 B
C
50 lines
893 B
C
/*
|
|
* Copyright IBM Corp. 2001,2008
|
|
*
|
|
* This file contains the IRQ specific code for hvc_console
|
|
*
|
|
*/
|
|
|
|
#include <linux/interrupt.h>
|
|
|
|
#include "hvc_console.h"
|
|
|
|
static irqreturn_t hvc_handle_interrupt(int irq, void *dev_instance)
|
|
{
|
|
/* if hvc_poll request a repoll, then kick the hvcd thread */
|
|
if (hvc_poll(dev_instance))
|
|
hvc_kick();
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/*
|
|
* For IRQ based systems these callbacks can be used
|
|
*/
|
|
int notifier_add_irq(struct hvc_struct *hp, int irq)
|
|
{
|
|
int rc;
|
|
|
|
if (!irq) {
|
|
hp->irq_requested = 0;
|
|
return 0;
|
|
}
|
|
rc = request_irq(irq, hvc_handle_interrupt, 0,
|
|
"hvc_console", hp);
|
|
if (!rc)
|
|
hp->irq_requested = 1;
|
|
return rc;
|
|
}
|
|
|
|
void notifier_del_irq(struct hvc_struct *hp, int irq)
|
|
{
|
|
if (!hp->irq_requested)
|
|
return;
|
|
free_irq(irq, hp);
|
|
hp->irq_requested = 0;
|
|
}
|
|
|
|
void notifier_hangup_irq(struct hvc_struct *hp, int irq)
|
|
{
|
|
notifier_del_irq(hp, irq);
|
|
}
|