strange problem with "usb_submit_urb"

[aditya uttam <uttam.aditya@xxxxxxxxx>]

Dear all,

I am writing driver for my custom usb device.
In my code the function usb_submit_urb() was returning with error
number -22 (-EINVAL).
when I looked into the usb_submit_urb() function I found the statement,
if (!urb || urb->hcpriv || !urb->complete)
		return -EINVAL;

I verified all the above parameters are fine before calling usb_submit_urb().
Please find the code snippet I am using.

      if (!current_urb || current_urb->hcpriv || !current_urb->complete)
	printk(" *****************  URB condition Failed **************\n");
       else
	printk("*****************  URB condition Success**************\n");
		
		
       /* submit the URB */
       spin_lock_irqsave(&current_urb_context->us->pusb_dev_spin_lock, flags);
       status = usb_submit_urb(current_urb, GFP_ATOMIC);
       spin_unlock_irqrestore(&current_urb_context->us->pusb_dev_spin_lock,
flags);

in this code usb_submit_urb() is returning -EINVAL and the print
statement is " *****************  URB condition Success**************
"
all the above code is being called from completion routine.

Please let me know if I am doing any mistakes.

Thanks in advance,
regards,
Aditya
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