Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758220Ab2EVXXt (ORCPT ); Tue, 22 May 2012 19:23:49 -0400 Received: from mail160.messagelabs.com ([216.82.253.99]:36396 "EHLO mail160.messagelabs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753944Ab2EVXXc (ORCPT ); Tue, 22 May 2012 19:23:32 -0400 X-Env-Sender: hartleys@visionengravers.com X-Msg-Ref: server-7.tower-160.messagelabs.com!1337729010!4571636!2 X-Originating-IP: [216.166.12.72] X-StarScan-Version: 6.5.10; banners=-,-,- X-VirusChecked: Checked From: H Hartley Sweeten To: Linux Kernel Subject: [PATCH] staging: comedi: remove thisboard macro in the dmm32at driver Date: Tue, 22 May 2012 16:23:09 -0700 User-Agent: KMail/1.9.9 CC: , , , MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-ID: <201205221623.09635.hartleys@visionengravers.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4609 Lines: 121 The 'thisboard' 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 Cc: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/drivers/dmm32at.c b/drivers/staging/comedi/drivers/dmm32at.c index 8382890..5be99b5 100644 --- a/drivers/staging/comedi/drivers/dmm32at.c +++ b/drivers/staging/comedi/drivers/dmm32at.c @@ -189,11 +189,6 @@ static const struct dmm32at_board dmm32at_boards[] = { }, }; -/* - * Useful for shorthand access to the particular board structure - */ -#define thisboard ((const struct dmm32at_board *)dev->board_ptr) - /* this structure is for data unique to this hardware driver. If * several hardware drivers keep similar information in this structure, * feel free to suggest moving the variable to the struct comedi_device struct. @@ -290,6 +285,7 @@ void dmm32at_setaitimer(struct comedi_device *dev, unsigned int nansec); static int dmm32at_attach(struct comedi_device *dev, struct comedi_devconfig *it) { + const struct dmm32at_board *board = comedi_board(dev); int ret; struct comedi_subdevice *s; unsigned char aihi, ailo, fifostat, aistat, intstat, airback; @@ -304,7 +300,7 @@ static int dmm32at_attach(struct comedi_device *dev, iobase, irq); /* register address space */ - if (!request_region(iobase, DMM32AT_MEMSIZE, thisboard->name)) { + if (!request_region(iobase, DMM32AT_MEMSIZE, board->name)) { printk(KERN_ERR "comedi%d: dmm32at: I/O port conflict\n", dev->minor); return -EIO; @@ -358,7 +354,7 @@ static int dmm32at_attach(struct comedi_device *dev, /* board is there, register interrupt */ if (irq) { - ret = request_irq(irq, dmm32at_isr, 0, thisboard->name, dev); + ret = request_irq(irq, dmm32at_isr, 0, board->name, dev); if (ret < 0) { printk(KERN_ERR "dmm32at: irq conflict\n"); return ret; @@ -366,18 +362,7 @@ static int dmm32at_attach(struct comedi_device *dev, dev->irq = irq; } -/* - * If you can probe the device to determine what device in a series - * it is, this is the place to do it. Otherwise, dev->board_ptr - * should already be initialized. - */ - /* dev->board_ptr = dmm32at_probe(dev); */ - -/* - * Initialize dev->board_name. Note that we can use the "thisboard" - * macro now, since we just initialized it in the last line. - */ - dev->board_name = thisboard->name; + dev->board_name = board->name; /* * Allocate the private structure area. alloc_private() is a @@ -399,9 +384,9 @@ static int dmm32at_attach(struct comedi_device *dev, s->type = COMEDI_SUBD_AI; /* we support single-ended (ground) and differential */ s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF | SDF_CMD_READ; - s->n_chan = thisboard->ai_chans; - s->maxdata = (1 << thisboard->ai_bits) - 1; - s->range_table = thisboard->ai_ranges; + s->n_chan = board->ai_chans; + s->maxdata = (1 << board->ai_bits) - 1; + s->range_table = board->ai_ranges; s->len_chanlist = 32; /* This is the maximum chanlist length that the board can handle */ s->insn_read = dmm32at_ai_rinsn; @@ -413,15 +398,15 @@ static int dmm32at_attach(struct comedi_device *dev, /* analog output subdevice */ s->type = COMEDI_SUBD_AO; s->subdev_flags = SDF_WRITABLE; - s->n_chan = thisboard->ao_chans; - s->maxdata = (1 << thisboard->ao_bits) - 1; - s->range_table = thisboard->ao_ranges; + s->n_chan = board->ao_chans; + s->maxdata = (1 << board->ao_bits) - 1; + s->range_table = board->ao_ranges; s->insn_write = dmm32at_ao_winsn; s->insn_read = dmm32at_ao_rinsn; s = dev->subdevices + 2; /* digital i/o subdevice */ - if (thisboard->have_dio) { + if (board->have_dio) { /* get access to the DIO regs */ dmm_outb(dev, DMM32AT_CNTRL, DMM32AT_DIOACC); @@ -433,7 +418,7 @@ static int dmm32at_attach(struct comedi_device *dev, /* set up the subdevice */ s->type = COMEDI_SUBD_DIO; s->subdev_flags = SDF_READABLE | SDF_WRITABLE; - s->n_chan = thisboard->dio_chans; + s->n_chan = board->dio_chans; s->maxdata = 1; s->state = 0; s->range_table = &range_digital; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/