From 1be0e3ed76188c9dd879f421953f5cbf5d9cee58 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 19 Nov 2008 10:21:17 -0800 Subject: [PATCH] Staging: comedi: fix checkpatch.pl issues in comedi_test.c This fixes almost all checkpatch.pl issues with the comedi_test.c file. Hint, volatile doesn't do what you think it does, it has been removed from the structure... Cc: Joachim Wuttke Cc: David Schleef Cc: Frank Mori Hess Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/comedi_test.c | 173 ++++++++++--------- 1 file changed, 87 insertions(+), 86 deletions(-) diff --git a/drivers/staging/comedi/drivers/comedi_test.c b/drivers/staging/comedi/drivers/comedi_test.c index 356a9e9c3ab..b8911374dcd 100644 --- a/drivers/staging/comedi/drivers/comedi_test.c +++ b/drivers/staging/comedi/drivers/comedi_test.c @@ -68,11 +68,11 @@ typedef struct waveform_board_struct { static const waveform_board waveform_boards[] = { { - name: "comedi_test", - ai_chans:N_CHANS, - ai_bits: 16, - have_dio:0, - }, + .name = "comedi_test", + .ai_chans = N_CHANS, + .ai_bits = 16, + .have_dio = 0, + }, }; #define thisboard ((const waveform_board *)dev->board_ptr) @@ -80,53 +80,54 @@ static const waveform_board waveform_boards[] = { /* Data unique to this driver */ typedef struct { struct timer_list timer; - struct timeval last; // time at which last timer interrupt occured - unsigned int uvolt_amplitude; // waveform amplitude in microvolts - unsigned long usec_period; // waveform period in microseconds - volatile unsigned long usec_current; // current time (modulo waveform period) - volatile unsigned long usec_remainder; // usec since last scan; - volatile unsigned long ai_count; // number of conversions remaining - unsigned int scan_period; // scan period in usec - unsigned int convert_period; // conversion period in usec - volatile unsigned timer_running:1; - volatile lsampl_t ao_loopbacks[N_CHANS]; + struct timeval last; /* time at which last timer interrupt occured */ + 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) */ + unsigned long usec_remainder; /* usec since last scan; */ + unsigned long ai_count; /* number of conversions remaining */ + unsigned int scan_period; /* scan period in usec */ + unsigned int convert_period; /* conversion period in usec */ + unsigned timer_running:1; + lsampl_t ao_loopbacks[N_CHANS]; } waveform_private; #define devpriv ((waveform_private *)dev->private) -static int waveform_attach(comedi_device * dev, comedi_devconfig * it); -static int waveform_detach(comedi_device * dev); +static int waveform_attach(comedi_device *dev, comedi_devconfig *it); +static int waveform_detach(comedi_device *dev); static comedi_driver driver_waveform = { - driver_name:"comedi_test", - module:THIS_MODULE, - attach:waveform_attach, - detach:waveform_detach, - board_name:&waveform_boards[0].name, - offset:sizeof(waveform_board), - num_names:sizeof(waveform_boards) / sizeof(waveform_board), + .driver_name = "comedi_test", + .module = THIS_MODULE, + .attach = waveform_attach, + .detach = waveform_detach, + .board_name = &waveform_boards[0].name, + .offset = sizeof(waveform_board), + .num_names = sizeof(waveform_boards) / sizeof(waveform_board), }; COMEDI_INITCLEANUP(driver_waveform); -static int waveform_ai_cmdtest(comedi_device * dev, comedi_subdevice * s, - comedi_cmd * cmd); -static int waveform_ai_cmd(comedi_device * dev, comedi_subdevice * s); -static int waveform_ai_cancel(comedi_device * dev, comedi_subdevice * s); -static int waveform_ai_insn_read(comedi_device * dev, comedi_subdevice * s, - comedi_insn * insn, lsampl_t * data); -static int waveform_ao_insn_write(comedi_device * dev, comedi_subdevice * s, - comedi_insn * insn, lsampl_t * data); -static sampl_t fake_sawtooth(comedi_device * dev, unsigned int range, - unsigned long current_time); -static sampl_t fake_squarewave(comedi_device * dev, unsigned int range, - unsigned long current_time); -static sampl_t fake_flatline(comedi_device * dev, unsigned int range, - unsigned long current_time); -static sampl_t fake_waveform(comedi_device * dev, unsigned int channel, - unsigned int range, unsigned long current_time); - -static const int nano_per_micro = 1000; // 1000 nanosec in a microsec - -// fake analog input ranges +static int waveform_ai_cmdtest(comedi_device *dev, comedi_subdevice *s, + comedi_cmd *cmd); +static int waveform_ai_cmd(comedi_device *dev, comedi_subdevice *s); +static int waveform_ai_cancel(comedi_device *dev, comedi_subdevice *s); +static int waveform_ai_insn_read(comedi_device *dev, comedi_subdevice *s, + comedi_insn *insn, lsampl_t *data); +static int waveform_ao_insn_write(comedi_device *dev, comedi_subdevice *s, + comedi_insn *insn, lsampl_t *data); +static sampl_t fake_sawtooth(comedi_device *dev, unsigned int range, + unsigned long current_time); +static sampl_t fake_squarewave(comedi_device *dev, unsigned int range, + unsigned long current_time); +static sampl_t fake_flatline(comedi_device *dev, unsigned int range, + unsigned long current_time); +static sampl_t fake_waveform(comedi_device *dev, unsigned int channel, + unsigned int range, unsigned long current_time); + +/* 1000 nanosec in a microsec */ +static const int nano_per_micro = 1000; + +/* fake analog input ranges */ static const comedi_lrange waveform_ai_ranges = { 2, { @@ -146,7 +147,7 @@ static void waveform_ai_interrupt(unsigned long arg) comedi_async *async = dev->read_subdev->async; comedi_cmd *cmd = &async->cmd; unsigned int i, j; - // all times in microsec + /* all times in microsec */ unsigned long elapsed_time; unsigned int num_scans; struct timeval now; @@ -191,30 +192,27 @@ static void waveform_ai_interrupt(unsigned long arg) comedi_event(dev, dev->read_subdev); } -static int waveform_attach(comedi_device * dev, comedi_devconfig * it) +static int waveform_attach(comedi_device *dev, comedi_devconfig *it) { comedi_subdevice *s; int amplitude = it->options[0]; int period = it->options[1]; - - printk("comedi%d: comedi_test: ", dev->minor); + int i; dev->board_name = thisboard->name; if (alloc_private(dev, sizeof(waveform_private)) < 0) return -ENOMEM; - // set default amplitude and period + /* set default amplitude and period */ if (amplitude <= 0) - amplitude = 1000000; // 1 volt + amplitude = 1000000; /* 1 volt */ if (period <= 0) - period = 100000; // 0.1 sec + period = 100000; /* 0.1 sec */ devpriv->uvolt_amplitude = amplitude; devpriv->usec_period = period; - printk("%i microvolt, %li microsecond waveform ", - devpriv->uvolt_amplitude, devpriv->usec_period); dev->n_subdevices = 2; if (alloc_subdevices(dev, dev->n_subdevices) < 0) return -ENOMEM; @@ -246,35 +244,33 @@ static int waveform_attach(comedi_device * dev, comedi_devconfig * it) s->do_cmd = 0; s->do_cmdtest = 0; s->cancel = 0; - { - /* Our default loopback value is just a 0V flatline */ - int i; - for (i = 0; i < s->n_chan; i++) - devpriv->ao_loopbacks[i] = s->maxdata / 2; - } + + /* Our default loopback value is just a 0V flatline */ + for (i = 0; i < s->n_chan; i++) + devpriv->ao_loopbacks[i] = s->maxdata / 2; init_timer(&(devpriv->timer)); devpriv->timer.function = waveform_ai_interrupt; devpriv->timer.data = (unsigned long)dev; - printk("attached\n"); - + printk(KERN_INFO "comedi%d: comedi_test: " + "%i microvolt, %li microsecond waveform attached\n", dev->minor, + devpriv->uvolt_amplitude, devpriv->usec_period); return 1; } -static int waveform_detach(comedi_device * dev) +static int waveform_detach(comedi_device *dev) { printk("comedi%d: comedi_test: remove\n", dev->minor); - if (dev->private) { + if (dev->private) waveform_ai_cancel(dev, dev->read_subdev); - } return 0; } -static int waveform_ai_cmdtest(comedi_device * dev, comedi_subdevice * s, - comedi_cmd * cmd) +static int waveform_ai_cmdtest(comedi_device *dev, comedi_subdevice *s, + comedi_cmd *cmd) { int err = 0; int tmp; @@ -309,7 +305,9 @@ static int waveform_ai_cmdtest(comedi_device * dev, comedi_subdevice * s, if (err) return 1; - /* step 2: make sure trigger sources are unique and mutually compatible */ + /* + * step 2: make sure trigger sources are unique and mutually compatible + */ if (cmd->convert_src != TRIG_NOW && cmd->convert_src != TRIG_TIMER) err++; @@ -344,7 +342,10 @@ static int waveform_ai_cmdtest(comedi_device * dev, comedi_subdevice * s, err++; } } - // XXX these checks are generic and should go in core if not there already + /* + * XXX these checks are generic and should go in core if not there + * already + */ if (!cmd->chanlist_len) { cmd->chanlist_len = 1; err++; @@ -373,7 +374,7 @@ static int waveform_ai_cmdtest(comedi_device * dev, comedi_subdevice * s, if (cmd->scan_begin_src == TRIG_TIMER) { tmp = cmd->scan_begin_arg; - // round to nearest microsec + /* round to nearest microsec */ cmd->scan_begin_arg = nano_per_micro * ((tmp + (nano_per_micro / 2)) / nano_per_micro); @@ -382,7 +383,7 @@ static int waveform_ai_cmdtest(comedi_device * dev, comedi_subdevice * s, } if (cmd->convert_src == TRIG_TIMER) { tmp = cmd->convert_arg; - // round to nearest microsec + /* round to nearest microsec */ cmd->convert_arg = nano_per_micro * ((tmp + (nano_per_micro / 2)) / nano_per_micro); @@ -396,7 +397,7 @@ static int waveform_ai_cmdtest(comedi_device * dev, comedi_subdevice * s, return 0; } -static int waveform_ai_cmd(comedi_device * dev, comedi_subdevice * s) +static int waveform_ai_cmd(comedi_device *dev, comedi_subdevice *s) { comedi_cmd *cmd = &s->async->cmd; @@ -428,15 +429,15 @@ static int waveform_ai_cmd(comedi_device * dev, comedi_subdevice * s) return 0; } -static int waveform_ai_cancel(comedi_device * dev, comedi_subdevice * s) +static int waveform_ai_cancel(comedi_device *dev, comedi_subdevice *s) { devpriv->timer_running = 0; del_timer(&devpriv->timer); return 0; } -static sampl_t fake_sawtooth(comedi_device * dev, unsigned int range_index, - unsigned long current_time) +static sampl_t fake_sawtooth(comedi_device *dev, unsigned int range_index, + unsigned long current_time) { comedi_subdevice *s = dev->read_subdev; unsigned int offset = s->maxdata / 2; @@ -452,12 +453,12 @@ static sampl_t fake_sawtooth(comedi_device * dev, unsigned int range_index, value = current_time; value *= binary_amplitude * 2; do_div(value, devpriv->usec_period); - value -= binary_amplitude; // get rid of sawtooth's dc offset + value -= binary_amplitude; /* get rid of sawtooth's dc offset */ return offset + value; } -static sampl_t fake_squarewave(comedi_device * dev, unsigned int range_index, - unsigned long current_time) +static sampl_t fake_squarewave(comedi_device *dev, unsigned int range_index, + unsigned long current_time) { comedi_subdevice *s = dev->read_subdev; unsigned int offset = s->maxdata / 2; @@ -475,15 +476,15 @@ static sampl_t fake_squarewave(comedi_device * dev, unsigned int range_index, return offset + value; } -static sampl_t fake_flatline(comedi_device * dev, unsigned int range_index, - unsigned long current_time) +static sampl_t fake_flatline(comedi_device *dev, unsigned int range_index, + unsigned long current_time) { return dev->read_subdev->maxdata / 2; } -// generates a different waveform depending on what channel is read -static sampl_t fake_waveform(comedi_device * dev, unsigned int channel, - unsigned int range, unsigned long current_time) +/* generates a different waveform depending on what channel is read */ +static sampl_t fake_waveform(comedi_device *dev, unsigned int channel, + unsigned int range, unsigned long current_time) { enum { SAWTOOTH_CHAN, @@ -503,8 +504,8 @@ static sampl_t fake_waveform(comedi_device * dev, unsigned int channel, return fake_flatline(dev, range, current_time); } -static int waveform_ai_insn_read(comedi_device * dev, comedi_subdevice * s, - comedi_insn * insn, lsampl_t * data) +static int waveform_ai_insn_read(comedi_device *dev, comedi_subdevice *s, + comedi_insn *insn, lsampl_t *data) { int i, chan = CR_CHAN(insn->chanspec); @@ -514,8 +515,8 @@ static int waveform_ai_insn_read(comedi_device * dev, comedi_subdevice * s, return insn->n; } -static int waveform_ao_insn_write(comedi_device * dev, comedi_subdevice * s, - comedi_insn * insn, lsampl_t * data) +static int waveform_ao_insn_write(comedi_device *dev, comedi_subdevice *s, + comedi_insn *insn, lsampl_t *data) { int i, chan = CR_CHAN(insn->chanspec); -- 2.41.1