/* Data unique to this driver */
struct waveform_private {
struct timer_list timer;
- struct timeval last; /* time at which last timer interrupt occured */
+ struct timeval last; /* time at which last timer interrupt occurred */
unsigned int uvolt_amplitude; /* waveform amplitude in microvolts */
unsigned long usec_period; /* waveform period in microseconds */
unsigned long usec_current; /* current time (modulo waveform period) */