request_firmware — send firmware request and wait for it
| int request_firmware ( | const struct firmware ** firmware_p, | 
| const char * name, | |
| struct device * device ); | 
firmware_ppointer to firmware image
namename of firmware file
devicedevice for which firmware is being loaded
   firmware_p will be used to return a firmware image by the name
   of name for device device.
   
Should be called from user context where sleeping is allowed.
   name will be used as $FIRMWARE in the uevent environment and
   should be distinctive enough not to be confused with any other
   firmware image for this or any other device.
   
   Caller must hold the reference count of device.
   
The function can be called safely inside device's suspend and resume callback.