static unsigned int __init SMC37c669_is_device_enabled()

in kernel/smc37c669.c [1734:1788]

• 39 lines of code
• 8 McCabe index (conditional complexity)

static unsigned int __init SMC37c669_is_device_enabled ( unsigned int func )
{
    unsigned char base_addr = 0;
    unsigned int dev_ok = FALSE;
    unsigned int ret_val = FALSE;
/*
** Enter configuration mode
*/
    SMC37c669_config_mode( TRUE );
     
    switch ( func ) {
    	case SERIAL_0:
	    base_addr =
		SMC37c669_read_config( SMC37c669_SERIAL0_BASE_ADDRESS_INDEX );
	    dev_ok = TRUE;
	    break;
	case SERIAL_1:
	    base_addr =
		SMC37c669_read_config( SMC37c669_SERIAL1_BASE_ADDRESS_INDEX );
	    dev_ok = TRUE;
	    break;
	case PARALLEL_0:
	    base_addr =
		SMC37c669_read_config( SMC37c669_PARALLEL0_BASE_ADDRESS_INDEX );
	    dev_ok = TRUE;
	    break;
	case FLOPPY_0:
	    base_addr =
		SMC37c669_read_config( SMC37c669_FDC_BASE_ADDRESS_INDEX );
	    dev_ok = TRUE;
	    break;
	case IDE_0:
	    base_addr =
		SMC37c669_read_config( SMC37c669_IDE_BASE_ADDRESS_INDEX );
	    dev_ok = TRUE;
	    break;
    }
/*
** If we have a valid device, check base_addr<7:6> to see if the
** device is enabled (mapped).
*/
    if ( ( dev_ok ) && ( ( base_addr & 0xC0 ) != 0 ) ) {
/*
** The mapping is not disabled, so assume that the function is 
** enabled.
*/
    	ret_val = TRUE;
    }
/*
** Exit configuration mode 
*/
    SMC37c669_config_mode( FALSE );

    return ret_val;
}