From 3cb08e08fbeab09fa5f3ba1cf27176dd41f5b70f Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Tue, 22 May 2012 17:09:03 -0700 Subject: [PATCH] staging: comedi: remove this_board macro in the pcl812 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/pcl812.c | 98 +++++++++++++++++---------------- 1 file changed, 51 insertions(+), 47 deletions(-) diff --git a/drivers/staging/comedi/drivers/pcl812.c b/drivers/staging/comedi/drivers/pcl812.c index 51f4ca9..28780ed 100644 --- a/drivers/staging/comedi/drivers/pcl812.c +++ b/drivers/staging/comedi/drivers/pcl812.c @@ -336,8 +336,6 @@ struct pcl812_board { unsigned char haveMPC508; /* 1=board use MPC508A multiplexor */ }; -#define this_board ((const struct pcl812_board *)dev->board_ptr) - struct pcl812_private { unsigned char valid; /* =1 device is OK */ @@ -560,6 +558,7 @@ static void pcl812_cmdtest_out(int e, struct comedi_cmd *cmd) static int pcl812_ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { + const struct pcl812_board *board = comedi_board(dev); int err = 0; int tmp, divisor1, divisor2; @@ -666,8 +665,8 @@ static int pcl812_ai_cmdtest(struct comedi_device *dev, } 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 */ @@ -682,7 +681,7 @@ static int pcl812_ai_cmdtest(struct comedi_device *dev, err++; } if (cmd->chanlist_len > MAX_CHANLIST_LEN) { - cmd->chanlist_len = this_board->n_aichan; + cmd->chanlist_len = board->n_aichan; err++; } if (cmd->scan_end_arg != cmd->chanlist_len) { @@ -715,11 +714,11 @@ static int pcl812_ai_cmdtest(struct comedi_device *dev, if (cmd->convert_src == TRIG_TIMER) { tmp = cmd->convert_arg; - 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); - 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++; } @@ -741,6 +740,7 @@ static int pcl812_ai_cmdtest(struct comedi_device *dev, */ static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) { + const struct pcl812_board *board = comedi_board(dev); unsigned int divisor1 = 0, divisor2 = 0, i, dma_flags, bytes; struct comedi_cmd *cmd = &s->async->cmd; @@ -767,9 +767,9 @@ static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) return -EINVAL; if (cmd->convert_src == TRIG_TIMER) { - if (cmd->convert_arg < this_board->ai_ns_min) - cmd->convert_arg = this_board->ai_ns_min; - i8253_cascade_ns_to_timer(this_board->i8254_osc_base, + if (cmd->convert_arg < board->ai_ns_min) + cmd->convert_arg = board->ai_ns_min; + i8253_cascade_ns_to_timer(board->i8254_osc_base, &divisor1, &divisor2, &cmd->convert_arg, cmd->flags & TRIG_ROUND_MASK); @@ -1192,6 +1192,7 @@ static void start_pacer(struct comedi_device *dev, int mode, */ static void free_resources(struct comedi_device *dev) { + const struct pcl812_board *board = comedi_board(dev); if (dev->private) { if (devpriv->dmabuf[0]) @@ -1204,7 +1205,7 @@ static void free_resources(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); } /* @@ -1234,6 +1235,8 @@ static int pcl812_ai_cancel(struct comedi_device *dev, */ static void pcl812_reset(struct comedi_device *dev) { + const struct pcl812_board *board = comedi_board(dev); + #ifdef PCL812_EXTDEBUG printk(KERN_DEBUG "pcl812 EDBG: BGN: pcl812_reset(...)\n"); #endif @@ -1242,7 +1245,7 @@ static void pcl812_reset(struct comedi_device *dev) devpriv->old_chan_reg = -1; /* invalidate chain/gain memory */ devpriv->old_gain_reg = -1; - switch (this_board->board_type) { + switch (board->board_type) { case boardPCL812PG: case boardPCL812: case boardACL8112: @@ -1273,6 +1276,7 @@ static void pcl812_reset(struct comedi_device *dev) static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it) { + const struct pcl812_board *board = comedi_board(dev); int ret, subdev; unsigned long iobase; unsigned int irq; @@ -1283,9 +1287,9 @@ static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it) iobase = it->options[0]; printk(KERN_INFO "comedi%d: pcl812: board=%s, ioport=0x%03lx", - dev->minor, this_board->name, iobase); + dev->minor, board->name, iobase); - if (!request_region(iobase, this_board->io_range, "pcl812")) { + if (!request_region(iobase, board->io_range, "pcl812")) { printk("I/O port conflict\n"); return -EIO; } @@ -1297,13 +1301,13 @@ static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it) return ret; /* Can't alloc mem */ } - dev->board_name = this_board->name; + dev->board_name = board->name; 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); @@ -1328,9 +1332,9 @@ static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it) devpriv->dma = dma; if (!dev->irq) 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 (((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 */ } @@ -1369,13 +1373,13 @@ static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it) no_dma: n_subdevices = 0; - if (this_board->n_aichan > 0) + if (board->n_aichan > 0) n_subdevices++; - if (this_board->n_aochan > 0) + if (board->n_aochan > 0) n_subdevices++; - if (this_board->n_dichan > 0) + if (board->n_dichan > 0) n_subdevices++; - if (this_board->n_dochan > 0) + if (board->n_dochan > 0) n_subdevices++; ret = alloc_subdevices(dev, n_subdevices); @@ -1387,46 +1391,46 @@ no_dma: subdev = 0; /* analog input */ - if (this_board->n_aichan > 0) { + if (board->n_aichan > 0) { s = dev->subdevices + subdev; s->type = COMEDI_SUBD_AI; s->subdev_flags = SDF_READABLE; - switch (this_board->board_type) { + switch (board->board_type) { case boardA821: if (it->options[2] == 1) { - s->n_chan = this_board->n_aichan_diff; + s->n_chan = board->n_aichan_diff; s->subdev_flags |= SDF_DIFF; devpriv->use_diff = 1; } else { - s->n_chan = this_board->n_aichan; + s->n_chan = board->n_aichan; s->subdev_flags |= SDF_GROUND; } break; case boardACL8112: case boardACL8216: if (it->options[4] == 1) { - s->n_chan = this_board->n_aichan_diff; + s->n_chan = board->n_aichan_diff; s->subdev_flags |= SDF_DIFF; devpriv->use_diff = 1; } else { - s->n_chan = this_board->n_aichan; + s->n_chan = board->n_aichan; s->subdev_flags |= SDF_GROUND; } break; default: - s->n_chan = this_board->n_aichan; + s->n_chan = board->n_aichan; s->subdev_flags |= SDF_GROUND; break; } - s->maxdata = this_board->ai_maxdata; + s->maxdata = board->ai_maxdata; s->len_chanlist = MAX_CHANLIST_LEN; - s->range_table = this_board->rangelist_ai; - if (this_board->board_type == boardACL8216) + s->range_table = board->rangelist_ai; + if (board->board_type == boardACL8216) s->insn_read = acl8216_ai_insn_read; else s->insn_read = pcl812_ai_insn_read; - devpriv->use_MPC = this_board->haveMPC508; + devpriv->use_MPC = board->haveMPC508; s->cancel = pcl812_ai_cancel; if (dev->irq) { dev->read_subdev = s; @@ -1435,7 +1439,7 @@ no_dma: s->do_cmd = pcl812_ai_cmd; s->poll = pcl812_ai_poll; } - switch (this_board->board_type) { + switch (board->board_type) { case boardPCL812PG: if (it->options[4] == 1) s->range_table = &range_pcl812pg2_ai; @@ -1529,17 +1533,17 @@ no_dma: } /* analog output */ - if (this_board->n_aochan > 0) { + if (board->n_aochan > 0) { s = dev->subdevices + subdev; s->type = COMEDI_SUBD_AO; s->subdev_flags = SDF_WRITABLE | SDF_GROUND; - s->n_chan = this_board->n_aochan; + s->n_chan = board->n_aochan; s->maxdata = 0xfff; s->len_chanlist = 1; - s->range_table = this_board->rangelist_ao; + s->range_table = board->rangelist_ao; s->insn_read = pcl812_ao_insn_read; s->insn_write = pcl812_ao_insn_write; - switch (this_board->board_type) { + switch (board->board_type) { case boardA821: if (it->options[3] == 1) s->range_table = &range_unipolar10; @@ -1558,32 +1562,32 @@ no_dma: } /* digital input */ - if (this_board->n_dichan > 0) { + if (board->n_dichan > 0) { s = dev->subdevices + subdev; s->type = 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; s->insn_bits = pcl812_di_insn_bits; subdev++; } /* digital output */ - if (this_board->n_dochan > 0) { + if (board->n_dochan > 0) { s = dev->subdevices + subdev; s->type = 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; s->insn_bits = pcl812_do_insn_bits; subdev++; } - switch (this_board->board_type) { + switch (board->board_type) { case boardACL8216: devpriv->ai_is16b = 1; case boardPCL812PG: -- 2.7.4