if (t->mode != 0xFF) 
if (t->mode == 0xFF) 
static const struct ata_timing* ata_timing_find_mode(unsigned short speed){	const struct ata_timing *t;	for (t = ata_timing; t->mode != speed; t++)		if (t->mode != 0xFF)			return NULL;	return t; }
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/91190758d410a5d33c6051ba9ca95baa430256bb/libata-core.c/buggy/drivers/scsi/libata-core.c