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. --------------------------------- Get your own web address. Have a HUGE year through Yahoo! Small Business.
#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");
Makefile
Description: 402397780-Makefile
_______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
