Man page 9 : request_firmware

request_firmware - send firmware request and wait for it

int request_firmware(const struct firmware **  firmware_p , const char *  name , struct device *  device );

firmware_p
    pointer to firmware image

name
    name of firmware file

device
    device 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 deviceAqs suspend and resume callback.