omapl138 EDMA interrupt?

I use edma in omapl138 arm side,I use the sys/bios config the interrupt ,it has interrupt in my isr fuction,,however it can't  into my task,the task status always ready.

I config the dma interrupt as flowing:

void AInt_init()
{
	
	//HIEISR = 0;//使能中断类型,FIQ or IRQ
	//EISR = 11;//使能系统中断号
	//CMR1 = 1;//中断通道映射
	//Hwi_enable();
	Hwi_Params hwiParams;
    Error_Block eb;
   
    Hwi_Params_init(&hwiParams);
    Error_init(&eb);
    
    hwiParams.arg = 1;
    hwiParams.eventId = 11;
    hwiParams.maskSetting = Hwi_MaskingOption_SELF;
     
	Hwi_mcasp_dma = Hwi_create(11, audiodma, &hwiParams, &eb);
   
    if (Error_check(&eb)) {
          // handle the error
    }
	
	GER = 0x1;//全局中断寄存器
	
	Hwi_enableInterrupt(11);
	//_enable_interrupts();
}

it always interrupt in my isr function, 

interrupt void audiodma(void)
{
	volatile Uint32 ipr;
	volatile unsigned int *pultmp;

	ipr = EDMA3ccRegs->IPR;
	if(ipr)
	//while(ipr)
	{
		//dma通道2的中断来了，接收ai的通道
		if ((ipr&0x00000001) != 0)
		{
			pultmp = aisamplewr;
			aisamplewr = aisamplere;
			aisamplere = pultmp;
			setAIFrameFlag(1);
			g_dma2count++;
		}

		//dma 通道3的中断来了，发送ao的通道
		if ((ipr&0x00000002) != 0)
		{
			pultmp = aosamplewr;
			aosamplewr = aosamplere;
			aosamplere = pultmp;
			setAOFrameFlag(1);
			g_dma2count2++;
		}
		
		//清零对应的中断标示，等待下次中断进入
		EDMA3ccRegs->ICR = ipr;

		//AInt_clear(11);
		
		ipr = EDMA3ccRegs->IPR;		
			
	}
	
}