From: Ian Abbott Date: Tue, 27 Oct 2015 16:59:18 +0000 (+0000) Subject: staging: comedi: comedi_test: rename members for AI commands X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=807060a369577ebdbbbf3f697a37f121a2e5bf6a;p=linux-beck.git staging: comedi: comedi_test: rename members for AI commands Rename the members of `struct waveform_private` that are used to handle AI commands, apart from those members used to control fake waveform generation. The renames are `timer` --> `ai_timer`, `scan_period` --> `ai_scan_period`, and `convert_period` --> `ai_convert_period`. Signed-off-by: Ian Abbott Reviewed-by: H Hartley Sweeten Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/drivers/comedi_test.c b/drivers/staging/comedi/drivers/comedi_test.c index 78fde3afc379..8e618ea610a3 100644 --- a/drivers/staging/comedi/drivers/comedi_test.c +++ b/drivers/staging/comedi/drivers/comedi_test.c @@ -61,14 +61,14 @@ enum waveform_state_bits { /* Data unique to this driver */ struct waveform_private { - struct timer_list timer; + struct timer_list ai_timer; /* timer for AI commands */ u64 ai_last_scan_time; /* time of last AI scan in usec */ unsigned int uvolt_amplitude; /* waveform amplitude in microvolts */ unsigned int usec_period; /* waveform period in microseconds */ unsigned int usec_current; /* current time (mod waveform period) */ unsigned long state_bits; - unsigned int scan_period; /* scan period in usec */ - unsigned int convert_period; /* conversion period in usec */ + unsigned int ai_scan_period; /* AI scan period in usec */ + unsigned int ai_convert_period; /* AI conversion period in usec */ unsigned int ao_loopbacks[N_CHANS]; }; @@ -191,11 +191,11 @@ static void waveform_ai_interrupt(unsigned long arg) return; elapsed_time = ktime_to_us(ktime_get()) - devpriv->ai_last_scan_time; - num_scans = elapsed_time / devpriv->scan_period; + num_scans = elapsed_time / devpriv->ai_scan_period; num_scans = comedi_nscans_left(s, num_scans); for (i = 0; i < num_scans; i++) { - unsigned int scan_remain_period = devpriv->scan_period; + unsigned int scan_remain_period = devpriv->ai_scan_period; for (j = 0; j < cmd->chanlist_len; j++) { unsigned short sample; @@ -206,11 +206,11 @@ static void waveform_ai_interrupt(unsigned long arg) CR_RANGE(cmd->chanlist[j]), devpriv->usec_current); comedi_buf_write_samples(s, &sample, 1); - devpriv->usec_current += devpriv->convert_period; - scan_remain_period -= devpriv->convert_period; + devpriv->usec_current += devpriv->ai_convert_period; + scan_remain_period -= devpriv->ai_convert_period; } devpriv->usec_current += scan_remain_period; - devpriv->ai_last_scan_time += devpriv->scan_period; + devpriv->ai_last_scan_time += devpriv->ai_scan_period; } if (devpriv->usec_current >= devpriv->usec_period) devpriv->usec_current %= devpriv->usec_period; @@ -218,7 +218,7 @@ static void waveform_ai_interrupt(unsigned long arg) if (cmd->stop_src == TRIG_COUNT && async->scans_done >= cmd->stop_arg) async->events |= COMEDI_CB_EOA; else - mod_timer(&devpriv->timer, jiffies + 1); + mod_timer(&devpriv->ai_timer, jiffies + 1); comedi_handle_events(dev, s); } @@ -338,15 +338,15 @@ static int waveform_ai_cmd(struct comedi_device *dev, } if (cmd->convert_src == TRIG_NOW) - devpriv->convert_period = 0; + devpriv->ai_convert_period = 0; else /* cmd->convert_src == TRIG_TIMER */ - devpriv->convert_period = cmd->convert_arg / NSEC_PER_USEC; + devpriv->ai_convert_period = cmd->convert_arg / NSEC_PER_USEC; if (cmd->scan_begin_src == TRIG_FOLLOW) { - devpriv->scan_period = devpriv->convert_period * - cmd->scan_end_arg; + devpriv->ai_scan_period = devpriv->ai_convert_period * + cmd->scan_end_arg; } else { /* cmd->scan_begin_src == TRIG_TIMER */ - devpriv->scan_period = cmd->scan_begin_arg / NSEC_PER_USEC; + devpriv->ai_scan_period = cmd->scan_begin_arg / NSEC_PER_USEC; } devpriv->ai_last_scan_time = ktime_to_us(ktime_get()); @@ -354,12 +354,12 @@ static int waveform_ai_cmd(struct comedi_device *dev, usec_current = devpriv->ai_last_scan_time; devpriv->usec_current = do_div(usec_current, devpriv->usec_period); - devpriv->timer.expires = jiffies + 1; + devpriv->ai_timer.expires = jiffies + 1; /* mark command as active */ smp_mb__before_atomic(); set_bit(WAVEFORM_AI_RUNNING, &devpriv->state_bits); smp_mb__after_atomic(); - add_timer(&devpriv->timer); + add_timer(&devpriv->ai_timer); return 0; } @@ -372,7 +372,7 @@ static int waveform_ai_cancel(struct comedi_device *dev, clear_bit(WAVEFORM_AI_RUNNING, &devpriv->state_bits); smp_mb__after_atomic(); /* cannot call del_timer_sync() as may be called from timer routine */ - del_timer(&devpriv->timer); + del_timer(&devpriv->ai_timer); return 0; } @@ -457,7 +457,7 @@ static int waveform_attach(struct comedi_device *dev, for (i = 0; i < s->n_chan; i++) devpriv->ao_loopbacks[i] = s->maxdata / 2; - setup_timer(&devpriv->timer, waveform_ai_interrupt, + setup_timer(&devpriv->ai_timer, waveform_ai_interrupt, (unsigned long)dev); dev_info(dev->class_dev, @@ -473,7 +473,7 @@ static void waveform_detach(struct comedi_device *dev) struct waveform_private *devpriv = dev->private; if (devpriv) - del_timer_sync(&devpriv->timer); + del_timer_sync(&devpriv->ai_timer); } static struct comedi_driver waveform_driver = {