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<div dir="ltr" align="left"><font size="2">Hi Scoot,<br>
<br>
<span class="123312911-05102011"><font face="Arial" color="#0000ff"> <font face="Times New Roman" color="#000000">When my
</font> <font face="Times New Roman" color="#000000">ISR gets exeuted I get a below BUG. Could let me what I am doing wrong in the ISR?</font></font></span></font></div>
<div dir="ltr" align="left"><span class="123312911-05102011"></span><font color="#ff0000"><font size="2"><span class="123312911-05102011"><font face="Arial" color="#0000ff"> </font></span></font></font></div>
<div dir="ltr" align="left"><font color="#ff0000"><font size="2"><span class="123312911-05102011"></span></font></font> </div>
<div dir="ltr" align="left"><font color="#ff0000"><font size="2"><span class="123312911-05102011"> </span>BUG: scheduling while atomic: IRQ-20/0x0fff0000/108<br>
Call Trace:<br>
[C3AEFEC0] [C0007CCC] (unreliable)<br>
[C3AEFEF0] [C0017F10] <br>
[C3AEFF00] [C0268818] <br>
[C3AEFF50] [C0017F44] <br>
[C3AEFF60] [C0018044] <br>
[C3AEFF70] [C0046A90] <br>
[C3AEFF90] [C0046D90] <br>
[C3AEFFC0] [C0032AFC] <br>
[C3AEFFF0] [C000F5AC]</font></font></div>
<p><font color="#ff0000"><br>
</font><br>
<font size="2">Below is the code :<br>
<font face="Arial" color="#0000ff"><strong>My ISR</strong></font></font></p>
<div><font face="Arial" color="#0000ff"><span lang="EN">
<p><font size="2">irqreturn_t cpld_irq_handler(int irq, void * dev_id, struct pt_regs *regs)</font></p>
<p><font size="2">{</font></p>
<p><font size="2">wake_up(&cpld_intr_wait);</font></p>
<p><font color="#ff0000" size="2">atomic_inc(&cpld_intr_data); /* incrementing this will indicate the poll() that the interrupt is occured */</font></p>
<p><font size="2"></font></p>
<p><font size="2">return 0;</font></p>
<p><font size="2">}</font></p>
</span></font></div>
<div><font face="Arial" color="#0000ff" size="2"><strong>DRIVER_INIT</strong></font></div>
<div><font size="2">static int __init gpio_init(void)<br>
{<br>
int ret = 0;<br>
int virq;<br>
<br>
<br>
</font><font size="2"><font color="#0000ff">atomic_set(&cpld_intr_data, 0); /* initialize the Interrupt indicator */<br>
</font> init_waitqueue_head(&cpld_intr_wait); /* Initialize the wait queue */<br>
</font></div>
<p><font size="2"> virq = irq_create_mapping(NULL, CPLD1_INTERRUPT);<br>
<br>
<br>
if ((ret = request_irq(virq,cpld_irq_handler, 0, GPIO_CHAR_PATH, NULL))!=0)<br>
{<br>
printk(KERN_ERR "gpio_init: Could not grab IRQ line for CPLD ret = %d\n",ret);<br>
goto err1;<br>
}<br>
<br>
<br>
if((s_nGPIOMajor = register_chrdev(MPC8247_DEVICE_MAJOR_NUM, GPIO_CHAR_PATH, &gpio_fops))<0)<br>
{<br>
GPIO_DBG2("GPIO_DRIVER : unable to get major %d\n", s_nGPIOMajor);<br>
return s_nGPIOMajor;<br>
<br>
}else{<br>
GPIO_DBG2("GPIO_DRIVER : major = %x\n", s_nGPIOMajor );<br>
}<br>
<br>
return 0;<br>
<br>
}</font> </p>
<p><span class="123312911-05102011"><font size="2">Thanks in Advance</font></span></p>
<p><font size="2">Regards,<br>
Smitha</font></p>
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