驱动中一中断使能就死，去掉就好了------怎么回事啊

写了一摸数转换cs5341驱动，环境：amlinux，cpu：ep7312
在驱动的初始化函数中，所有寄存器初始化完毕后，加上fiq使能语句。insmod使就死在那了
去掉中断使能就正常了，请问怎么回事啊？


附初始化函数：
int CS5341Init(void)
{
int rc;
struct pt_regs regs;
void *fiqhandler_start;
unsigned int fiqhandler_length;
extern unsigned char dai_fiq_handler_start, dai_fiq_handler_end;//外部变量，在汇编程序中定义




Ready = 0;

INTMR3 = 0x0;



SYSCON3 |= 0x00000008;
// frame size:64; 0x00000208(128fs)
// Select DAI mode instead of CODEC/SSI mode.

DAI64FS = 0x60B;
// 64FS SAMPLE RATE: 48K PLL:74MZ



DAIR =0x00220404;

DAISR =0xFFFFFFFF;
// Clear the overrun and underrun bits in the DAI status register.

DAIR |=0x10000;
// enable DAI interface

//
// Enable the FIFOs for the left and right channels.
//
while(!(DAISR & 0x1000)) //直到DAISR的fifo传送（或输出）完成
{
}

DAIDR2 = 0x118000; //右通道使能

while(!(DAISR & 0x1000)) //直到DAISR的fifo传送（或输出）完成
{
}

DAIDR2 = 0xD8000;
while(!(DAISR & 0x1000)) ;



INTMR3 |= 0x00000001;
// DAI interface interrupt *************** 加上这一句就死机了！！！！！！！！！




delay(1000);
// Delay so the CS5341 can calibrate.



rc = register_chrdev(cs5341_major, "CS5341", &CS5341_fops);
if (rc < 0) {
printk(KERN_WARNING "CS5341: can't get Major %d\n",
cs5341_major);
return rc;
}
if (cs5341_major == 0) cs5341_major = rc;
printk("the dynamic major device number is %d\n",cs5341_major);
printk("CS5341............Support\n");

num = (int*)kmalloc(MMSIZE,GFP_KERNEL);
fiqhandler_start = &dai_fiq_handler_start;
fiqhandler_length = &dai_fiq_handler_end - &dai_fiq_handler_start;


if (claim_fiq(&cs5341_fh))
{
printk("cs5341_fh: couldn't claim FIQ.\n");
return 0;
}


set_fiq_handler(fiqhandler_start,fiqhandler_length);
set_fiq_regs(&regs);
enable_fiq(cs5341_fiq_num);

*num = 0;
start = (char*)(num + sizeof(int));
end = (char*)(num + MMSIZE);//the last bit of the bottom of the queue;
head = start;
tail = (char*)num;//tail points the last vaild data;when no data exsit,it ponits num

return 0;
}

首先要区分是不是由于那一句语句发生的所谓驱动“死掉”。

你可以先用调试器或者简单的初始化语句测试一下你的fiq使能步骤正确与否，如果正确，那么你就应该分析你使能后的驱动程序在逻辑上正确与否。

每一个项目都是一个系统，希望以上的排查步骤能够给你带来帮助。太具体的东西还是自己去发现去解决。