[Xenomai-help] interrupts test

[mani bhatti <imranbashirbhatti@domain.hid>]

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Hi 
I have attached a  kernel module parint.c.When i insert parint.ko  into kernel i get the following message from kernel .

Request_irq returns 0
Interrupt generated. You should see the handler-message
Badness in enable_irq at kernel/irq/manage.c:126
 [<c012da81>] enable_irq+0x68/0xdf
 [<c80be033>] init_module+0x22/0x52 [parint]
 [<c80be000>] handler+0x0/0x11 [parint]
 [<c012c78a>] sys_init_module+0xb5/0x221
 [<c0102898>] syscall_call+0x7/0xb



Please if some one can point out the mistake i would be very helpful.
Thanks.

 
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[-- Attachment #2: 4109319093-parint.c --]
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#include <linux/module.h>
#include <linux/interrupt.h>
#include <asm/io.h>

#define BASEPORT 0x378

static int handler(void)
{
	// do stuff
	printk(">>> PARALLEL PORT INT HANDLED\n");
	return IRQ_HANDLED;
}

int xinit_module(void)
{
	int ret;
	ret = request_irq(7, handler, SA_INTERRUPT, "parallelport", NULL);
	enable_irq(7);
        printk("\nRequest_irq returns %d \n",ret);

	//set port to interrupt mode; pins are output
	outb_p(0x10, BASEPORT + 2); 

//	printk("Generating interrupt now on all output pins (intr/ACK = pin 10)\n");
	
	//generate interrupt
	outb_p(0, BASEPORT);
	outb_p(255, BASEPORT);
	outb_p(0, BASEPORT);
//	printk("Interrupt generated. You should see the handler-message\n");
	return 0;
}

void xcleanup_module(void)
{
	disable_irq(7);
	free_irq(7, NULL);
}

module_init(xinit_module);
module_exit(xcleanup_module);
MODULE_LICENSE("GPL");

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obj-m	:= parint.o

KDIR	:= /lib/modules/$(shell uname -r)/build
PWD		:= $(shell pwd)

default:
	$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules