staging: comedi: remove this_board macro in the pcmuio driver

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 <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/pcmuio.c b/drivers/staging/comedi/drivers/pcmuio.c
index 623381d..b1a9bed 100644 (file)
--- a/drivers/staging/comedi/drivers/pcmuio.c
+++ b/drivers/staging/comedi/drivers/pcmuio.c
@@ -155,11 +155,6 @@ struct pcmuio_board {
        const int num_ports;
 };
 
-/*
- * Useful for shorthand access to the particular board structure
- */
-#define thisboard ((const struct pcmuio_board *)dev->board_ptr)
-
 /* this structure is for data unique to this subdevice.  */
 struct pcmuio_subdev_private {
        /* mapping of halfwords (bytes) in port/chanarray to iobase */
@@ -354,7 +349,9 @@ static int pcmuio_dio_insn_config(struct comedi_device *dev,
 
 static void switch_page(struct comedi_device *dev, int asic, int page)
 {
-       if (asic < 0 || asic >= thisboard->num_asics)
+       const struct pcmuio_board *board = comedi_board(dev);
+
+       if (asic < 0 || asic >= board->num_asics)
                return;         /* paranoia */
        if (page < 0 || page >= NUM_PAGES)
                return;         /* more paranoia */
@@ -370,9 +367,10 @@ static void switch_page(struct comedi_device *dev, int asic, int page)
 static void init_asics(struct comedi_device *dev)
 {                              /* sets up an
                                   ASIC chip to defaults */
+       const struct pcmuio_board *board = comedi_board(dev);
        int asic;
 
-       for (asic = 0; asic < thisboard->num_asics; ++asic) {
+       for (asic = 0; asic < board->num_asics; ++asic) {
                int port, page;
                unsigned long baseaddr = dev->iobase + asic * ASIC_IOSIZE;
 
@@ -407,7 +405,9 @@ static void init_asics(struct comedi_device *dev)
 #ifdef notused
 static void lock_port(struct comedi_device *dev, int asic, int port)
 {
-       if (asic < 0 || asic >= thisboard->num_asics)
+       const struct pcmuio_board *board = comedi_board(dev);
+
+       if (asic < 0 || asic >= board->num_asics)
                return;         /* paranoia */
        if (port < 0 || port >= PORTS_PER_ASIC)
                return;         /* more paranoia */
@@ -420,7 +420,9 @@ static void lock_port(struct comedi_device *dev, int asic, int port)
 
 static void unlock_port(struct comedi_device *dev, int asic, int port)
 {
-       if (asic < 0 || asic >= thisboard->num_asics)
+       const struct pcmuio_board *board = comedi_board(dev);
+
+       if (asic < 0 || asic >= board->num_asics)
                return;         /* paranoia */
        if (port < 0 || port >= PORTS_PER_ASIC)
                return;         /* more paranoia */
@@ -747,6 +749,7 @@ pcmuio_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
 
 static int pcmuio_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 {
+       const struct pcmuio_board *board = comedi_board(dev);
        struct comedi_subdevice *s;
        int sdev_no, chans_left, n_subdevs, port, asic, thisasic_chanct = 0;
        unsigned long iobase;
@@ -762,17 +765,13 @@ static int pcmuio_attach(struct comedi_device *dev, struct comedi_devconfig *it)
        dev->iobase = iobase;
 
        if (!iobase || !request_region(iobase,
-                                      thisboard->num_asics * ASIC_IOSIZE,
+                                      board->num_asics * ASIC_IOSIZE,
                                       dev->driver->driver_name)) {
                dev_err(dev->hw_dev, "I/O port conflict\n");
                return -EIO;
        }
 
-/*
- * 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
@@ -792,7 +791,7 @@ static int pcmuio_attach(struct comedi_device *dev, struct comedi_devconfig *it)
                spin_lock_init(&devpriv->asics[asic].spinlock);
        }
 
-       chans_left = CHANS_PER_ASIC * thisboard->num_asics;
+       chans_left = CHANS_PER_ASIC * board->num_asics;
        n_subdevs = CALC_N_SUBDEVS(chans_left);
        devpriv->sprivs =
            kcalloc(n_subdevs, sizeof(struct pcmuio_subdev_private),
@@ -881,7 +880,7 @@ static int pcmuio_attach(struct comedi_device *dev, struct comedi_devconfig *it)
        for (asic = 0; irq[0] && asic < MAX_ASICS; ++asic) {
                if (irq[asic]
                    && request_irq(irq[asic], interrupt_pcmuio,
-                                  IRQF_SHARED, thisboard->name, dev)) {
+                                  IRQF_SHARED, board->name, dev)) {
                        int i;
                        /* unroll the allocated irqs.. */
                        for (i = asic - 1; i >= 0; --i) {
@@ -898,7 +897,7 @@ static int pcmuio_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 
        if (irq[0]) {
                dev_dbg(dev->hw_dev, "irq: %u\n", irq[0]);
-               if (irq[1] && thisboard->num_asics == 2)
+               if (irq[1] && board->num_asics == 2)
                        dev_dbg(dev->hw_dev, "second ASIC irq: %u\n", irq[1]);
        } else {
                dev_dbg(dev->hw_dev, "(IRQ mode disabled)\n");
@@ -910,10 +909,11 @@ static int pcmuio_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 
 static void pcmuio_detach(struct comedi_device *dev)
 {
+       const struct pcmuio_board *board = comedi_board(dev);
        int i;
 
        if (dev->iobase)
-               release_region(dev->iobase, ASIC_IOSIZE * thisboard->num_asics);
+               release_region(dev->iobase, ASIC_IOSIZE * board->num_asics);
        for (i = 0; i < MAX_ASICS; ++i) {
                if (devpriv->asics[i].irq)
                        free_irq(devpriv->asics[i].irq, dev);