RTL Sharing IRQ with linux

Hi,
	I try to share IRQ between RTLinux interrupt handler and linux
device driver. But failed, who can explain it?

	My env:
	Intel Celeron 2.4, DDR 512M, HD 40G
	linux 2.2.18, rtlinux-3.0
	Debian 3.0
	
	My PCI device will generate a interrupt 11(Maybe BIOS assign).
in my host the USB controller and RTL8139 controller sharing the
interrupt 11.
	The following is my method and some pseudo code:
	
intr_handler()
{
	if(is_my_device_irq()) {
		//do something
		rtl_enable_hard_irq();
	}
	rtl_pend_global_irq();
}

module_init()
{
	rtl_request_gloabl_irq(intr, intr_handler);
	rtl_hard_enable_irq(intr);
}

module_cleanup()
{
	//rtl_hard_disable_irq(intr);
	rtl_free_global_irq(intr);
}

the problem:
	insmod rt module, the general linux intr can work
	rmmod rt module, the system will die
	but before rtl_free_global_irq(intr); insert
rtl_disable_hard_irq(); the system is OK, but linux intr will be
blocked, the Ethernet card can not work.
	
	

Ding Guijin
Zinglabs Technologies
Addr:23rd Floor, Building 2, 
ShangDi International High Tech Park, No.2 Information Road, 
ShangDi, HaiDian District Beijing, China 100085
Tel: 8610-82893030 ext.515
Fax: 8610-82893190
http://www.zinglabs.com


_______________________________________________
Rtl mailing list
[email protected]
http://www2.fsmlabs.com/mailman/listinfo/rtl