From 240c6e6a7125fd7a6ebcbdd8fbbf646df0f69186 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Tue, 22 May 2012 17:14:14 -0700 Subject: [PATCH] staging: comedi: remove this_board macro in the pcl816 driver The 'this_board' macro depends on having a local variable with a magic name. The CodingStyle document suggests not doing this to avoid confusion. Remove the macro and use the comedi_board() inline helper to get the dev->board_ptr information. Signed-off-by: H Hartley Sweeten Cc: Ian Abbott Cc: Mori Hess Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/pcl816.c | 71 +++++++++++++++++---------------- 1 file changed, 37 insertions(+), 34 deletions(-) diff --git a/drivers/staging/comedi/drivers/pcl816.c b/drivers/staging/comedi/drivers/pcl816.c index cc67b6d..277a23e 100644 --- a/drivers/staging/comedi/drivers/pcl816.c +++ b/drivers/staging/comedi/drivers/pcl816.c @@ -126,7 +126,6 @@ struct pcl816_board { }; #define devpriv ((struct pcl816_private *)dev->private) -#define this_board ((const struct pcl816_board *)dev->board_ptr) #ifdef unused static int RTC_lock; /* RTC lock */ @@ -451,6 +450,7 @@ static void pcl816_cmdtest_out(int e, struct comedi_cmd *cmd) static int pcl816_ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { + const struct pcl816_board *board = comedi_board(dev); int err = 0; int tmp, divisor1 = 0, divisor2 = 0; @@ -531,8 +531,8 @@ static int pcl816_ai_cmdtest(struct comedi_device *dev, err++; } if (cmd->convert_src == TRIG_TIMER) { - if (cmd->convert_arg < this_board->ai_ns_min) { - cmd->convert_arg = this_board->ai_ns_min; + if (cmd->convert_arg < board->ai_ns_min) { + cmd->convert_arg = board->ai_ns_min; err++; } } else { /* TRIG_EXT */ @@ -565,12 +565,12 @@ static int pcl816_ai_cmdtest(struct comedi_device *dev, /* step 4: fix up any arguments */ if (cmd->convert_src == TRIG_TIMER) { tmp = cmd->convert_arg; - i8253_cascade_ns_to_timer(this_board->i8254_osc_base, + i8253_cascade_ns_to_timer(board->i8254_osc_base, &divisor1, &divisor2, &cmd->convert_arg, cmd->flags & TRIG_ROUND_MASK); - if (cmd->convert_arg < this_board->ai_ns_min) - cmd->convert_arg = this_board->ai_ns_min; + if (cmd->convert_arg < board->ai_ns_min) + cmd->convert_arg = board->ai_ns_min; if (tmp != cmd->convert_arg) err++; } @@ -592,6 +592,7 @@ static int pcl816_ai_cmdtest(struct comedi_device *dev, static int pcl816_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) { + const struct pcl816_board *board = comedi_board(dev); unsigned int divisor1 = 0, divisor2 = 0, dma_flags, bytes, dmairq; struct comedi_cmd *cmd = &s->async->cmd; unsigned int seglen; @@ -609,10 +610,10 @@ static int pcl816_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) return -EBUSY; if (cmd->convert_src == TRIG_TIMER) { - if (cmd->convert_arg < this_board->ai_ns_min) - cmd->convert_arg = this_board->ai_ns_min; + if (cmd->convert_arg < board->ai_ns_min) + cmd->convert_arg = board->ai_ns_min; - i8253_cascade_ns_to_timer(this_board->i8254_osc_base, &divisor1, + i8253_cascade_ns_to_timer(board->i8254_osc_base, &divisor1, &divisor2, &cmd->convert_arg, cmd->flags & TRIG_ROUND_MASK); @@ -1028,6 +1029,7 @@ static int set_rtc_irq_bit(unsigned char bit) static int pcl816_attach(struct comedi_device *dev, struct comedi_devconfig *it) { + const struct pcl816_board *board = comedi_board(dev); int ret; unsigned long iobase; unsigned int irq, dma; @@ -1038,9 +1040,9 @@ static int pcl816_attach(struct comedi_device *dev, struct comedi_devconfig *it) /* claim our I/O space */ iobase = it->options[0]; printk("comedi%d: pcl816: board=%s, ioport=0x%03lx", dev->minor, - this_board->name, iobase); + board->name, iobase); - if (!request_region(iobase, this_board->io_range, "pcl816")) { + if (!request_region(iobase, board->io_range, "pcl816")) { printk("I/O port conflict\n"); return -EIO; } @@ -1056,15 +1058,14 @@ static int pcl816_attach(struct comedi_device *dev, struct comedi_devconfig *it) if (ret < 0) return ret; /* Can't alloc mem */ - /* set up some name stuff */ - dev->board_name = this_board->name; + dev->board_name = board->name; /* grab our IRQ */ irq = 0; - if (this_board->IRQbits != 0) { /* board support IRQ */ + if (board->IRQbits != 0) { /* board support IRQ */ irq = it->options[1]; if (irq) { /* we want to use IRQ */ - if (((1 << irq) & this_board->IRQbits) == 0) { + if (((1 << irq) & board->IRQbits) == 0) { printk (", IRQ %u is out of allowed range, " "DISABLING IT", irq); @@ -1134,12 +1135,12 @@ no_rtc: if ((devpriv->irq_free == 0) && (devpriv->dma_rtc == 0)) goto no_dma; /* if we haven't IRQ, we can't use DMA */ - if (this_board->DMAbits != 0) { /* board support DMA */ + if (board->DMAbits != 0) { /* board support DMA */ dma = it->options[2]; if (dma < 1) goto no_dma; /* DMA disabled */ - if (((1 << dma) & this_board->DMAbits) == 0) { + if (((1 << dma) & board->DMAbits) == 0) { printk(", DMA is out of allowed range, FAIL!\n"); return -EINVAL; /* Bad DMA */ } @@ -1185,11 +1186,11 @@ no_rtc: no_dma: -/* if (this_board->n_aochan > 0) +/* if (board->n_aochan > 0) subdevs[1] = COMEDI_SUBD_AO; - if (this_board->n_dichan > 0) + if (board->n_dichan > 0) subdevs[2] = COMEDI_SUBD_DI; - if (this_board->n_dochan > 0) + if (board->n_dochan > 0) subdevs[3] = COMEDI_SUBD_DO; */ @@ -1198,17 +1199,17 @@ no_dma: return ret; s = dev->subdevices + 0; - if (this_board->n_aichan > 0) { + if (board->n_aichan > 0) { s->type = COMEDI_SUBD_AI; devpriv->sub_ai = s; dev->read_subdev = s; s->subdev_flags = SDF_READABLE | SDF_CMD_READ; - s->n_chan = this_board->n_aichan; + s->n_chan = board->n_aichan; s->subdev_flags |= SDF_DIFF; /* printk (", %dchans DIFF DAC - %d", s->n_chan, i); */ - s->maxdata = this_board->ai_maxdata; - s->len_chanlist = this_board->ai_chanlist; - s->range_table = this_board->ai_range_type; + s->maxdata = board->ai_maxdata; + s->len_chanlist = board->ai_chanlist; + s->range_table = board->ai_range_type; s->cancel = pcl816_ai_cancel; s->do_cmdtest = pcl816_ai_cmdtest; s->do_cmd = pcl816_ai_cmd; @@ -1221,25 +1222,25 @@ no_dma: #if 0 case COMEDI_SUBD_AO: s->subdev_flags = SDF_WRITABLE | SDF_GROUND; - s->n_chan = this_board->n_aochan; - s->maxdata = this_board->ao_maxdata; - s->len_chanlist = this_board->ao_chanlist; - s->range_table = this_board->ao_range_type; + s->n_chan = board->n_aochan; + s->maxdata = board->ao_maxdata; + s->len_chanlist = board->ao_chanlist; + s->range_table = board->ao_range_type; break; case COMEDI_SUBD_DI: s->subdev_flags = SDF_READABLE; - s->n_chan = this_board->n_dichan; + s->n_chan = board->n_dichan; s->maxdata = 1; - s->len_chanlist = this_board->n_dichan; + s->len_chanlist = board->n_dichan; s->range_table = &range_digital; break; case COMEDI_SUBD_DO: s->subdev_flags = SDF_WRITABLE; - s->n_chan = this_board->n_dochan; + s->n_chan = board->n_dochan; s->maxdata = 1; - s->len_chanlist = this_board->n_dochan; + s->len_chanlist = board->n_dochan; s->range_table = &range_digital; break; #endif @@ -1253,6 +1254,8 @@ case COMEDI_SUBD_DO: static void pcl816_detach(struct comedi_device *dev) { + const struct pcl816_board *board = comedi_board(dev); + if (dev->private) { pcl816_ai_cancel(dev, devpriv->sub_ai); pcl816_reset(dev); @@ -1275,7 +1278,7 @@ static void pcl816_detach(struct comedi_device *dev) if (dev->irq) free_irq(dev->irq, dev); if (dev->iobase) - release_region(dev->iobase, this_board->io_range); + release_region(dev->iobase, board->io_range); #ifdef unused if (devpriv->dma_rtc) RTC_lock--; -- 2.7.4