staging: comedi: amplc_dio200: Use IS_ENABLED()
Change conditional compilation on kernel options to use the IS_ENABLED()
macro. Remove most of the #ifdef lines and add extra if
(IS_ENABLED(xxx)) tests so the compiler can remove unreachable code.
The pci_driver stuff and device table and some of the static const data
is still conditionally compiled.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/comedi/drivers/amplc_dio200.c b/drivers/staging/comedi/drivers/amplc_dio200.c
index f6f6144..95d4370 100644
--- a/drivers/staging/comedi/drivers/amplc_dio200.c
+++ b/drivers/staging/comedi/drivers/amplc_dio200.c
@@ -215,14 +215,6 @@
#define DIO200_DRIVER_NAME "amplc_dio200"
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_ISA_MODULE
-#define CONFIG_COMEDI_AMPLC_DIO200_ISA
-#endif
-
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_PCI_MODULE
-#define CONFIG_COMEDI_AMPLC_DIO200_PCI
-#endif
-
/* PCI IDs */
#define PCI_VENDOR_ID_AMPLICON 0x14dc
#define PCI_DEVICE_ID_AMPLICON_PCI272 0x000a
@@ -280,12 +272,12 @@
};
enum dio200_layout {
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_ISA
+#if IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_ISA)
pc212_layout,
pc214_layout,
#endif
pc215_layout,
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_ISA
+#if IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_ISA)
pc218_layout,
#endif
pc272_layout
@@ -300,7 +292,7 @@
};
static const struct dio200_board dio200_boards[] = {
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_ISA
+#if IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_ISA)
{
.name = "pc212e",
.bustype = isa_bustype,
@@ -332,7 +324,7 @@
.layout = pc272_layout,
},
#endif
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_PCI
+#if IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_PCI)
{
.name = "pci215",
.devid = PCI_DEVICE_ID_AMPLICON_PCI215,
@@ -375,7 +367,7 @@
};
static const struct dio200_layout_struct dio200_layouts[] = {
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_ISA
+#if IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_ISA)
[pc212_layout] = {
.n_subdevs = 6,
.sdtype = {sd_8255, sd_8254, sd_8254, sd_8254,
@@ -404,7 +396,7 @@
.has_int_sce = 1,
.has_clk_gat_sce = 1,
},
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_ISA
+#if IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_ISA)
[pc218_layout] = {
.n_subdevs = 7,
.sdtype = {sd_8254, sd_8254, sd_8255, sd_8254,
@@ -431,7 +423,7 @@
* PCI driver table.
*/
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_PCI
+#if IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_PCI)
static DEFINE_PCI_DEVICE_TABLE(dio200_pci_table) = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI215) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI272) },
@@ -453,9 +445,7 @@
feel free to suggest moving the variable to the struct comedi_device struct.
*/
struct dio200_private {
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_PCI
struct pci_dev *pci_dev; /* PCI device */
-#endif
int intr_sd;
};
@@ -502,7 +492,7 @@
.num_names = ARRAY_SIZE(dio200_boards),
};
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_PCI
+#if IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_PCI)
static int __devinit driver_amplc_dio200_pci_probe(struct pci_dev *dev,
const struct pci_device_id
*ent)
@@ -561,7 +551,6 @@
* This function looks for a PCI device matching the requested board name,
* bus and slot.
*/
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_PCI
static int
dio200_find_pci(struct comedi_device *dev, int bus, int slot,
struct pci_dev **pci_dev_p)
@@ -617,13 +606,11 @@
}
return -EIO;
}
-#endif
/*
* This function checks and requests an I/O region, reporting an error
* if there is a conflict.
*/
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_ISA
static int
dio200_request_region(unsigned minor, unsigned long from, unsigned long extent)
{
@@ -634,7 +621,6 @@
}
return 0;
}
-#endif
/*
* 'insn_bits' function for an 'INTERRUPT' subdevice.
@@ -1346,10 +1332,6 @@
struct comedi_subdevice *s;
unsigned long iobase = 0;
unsigned int irq = 0;
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_PCI
- struct pci_dev *pci_dev = NULL;
- int bus = 0, slot = 0;
-#endif
const struct dio200_layout_struct *layout;
int share_irq = 0;
int sdx;
@@ -1366,40 +1348,27 @@
return ret;
}
- /* Process options. */
- switch (thisboard->bustype) {
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_ISA
- case isa_bustype:
+ /* Process options and reserve resources according to bus type. */
+ if (IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_ISA) &&
+ thisboard->bustype == isa_bustype) {
iobase = it->options[0];
irq = it->options[1];
share_irq = 0;
- break;
-#endif
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_PCI
- case pci_bustype:
+ ret = dio200_request_region(dev->minor, iobase, DIO200_IO_SIZE);
+ if (ret < 0)
+ return ret;
+ } else if (IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_PCI) &&
+ thisboard->bustype == pci_bustype) {
+ struct pci_dev *pci_dev = NULL;
+ int bus, slot;
+
bus = it->options[0];
slot = it->options[1];
share_irq = 1;
-
ret = dio200_find_pci(dev, bus, slot, &pci_dev);
if (ret < 0)
return ret;
devpriv->pci_dev = pci_dev;
- break;
-#endif
- default:
- printk(KERN_ERR
- "comedi%d: %s: BUG! cannot determine board type!\n",
- dev->minor, DIO200_DRIVER_NAME);
- return -EINVAL;
- break;
- }
-
- devpriv->intr_sd = -1;
-
- /* Enable device and reserve I/O spaces. */
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_PCI
- if (pci_dev) {
ret = comedi_pci_enable(pci_dev, DIO200_DRIVER_NAME);
if (ret < 0) {
printk(KERN_ERR
@@ -1409,15 +1378,15 @@
}
iobase = pci_resource_start(pci_dev, 2);
irq = pci_dev->irq;
- } else
-#endif
- {
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_ISA
- ret = dio200_request_region(dev->minor, iobase, DIO200_IO_SIZE);
- if (ret < 0)
- return ret;
-#endif
+ } else {
+ printk(KERN_ERR
+ "comedi%d: %s: BUG! cannot determine board type!\n",
+ dev->minor, DIO200_DRIVER_NAME);
+ return -EINVAL;
}
+
+ devpriv->intr_sd = -1;
+
dev->iobase = iobase;
layout = thislayout;
@@ -1492,20 +1461,12 @@
}
printk(KERN_INFO "comedi%d: %s ", dev->minor, dev->board_name);
- switch (thisboard->bustype) {
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_ISA
- case isa_bustype:
+ if (IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_ISA) &&
+ thisboard->bustype == isa_bustype)
printk("(base %#lx) ", iobase);
- break;
-#endif
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_PCI
- case pci_bustype:
- printk("(pci %s) ", pci_name(pci_dev));
- break;
-#endif
- default:
- break;
- }
+ else if (IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_PCI) &&
+ thisboard->bustype == pci_bustype)
+ printk("(pci %s) ", pci_name(devpriv->pci_dev));
if (irq)
printk("(irq %u%s) ", irq, (dev->irq ? "" : " UNAVAILABLE"));
else
@@ -1543,18 +1504,17 @@
}
}
if (devpriv) {
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_PCI
- if (devpriv->pci_dev) {
- if (dev->iobase)
- comedi_pci_disable(devpriv->pci_dev);
- pci_dev_put(devpriv->pci_dev);
- } else
-#endif
- {
-#ifdef CONFIG_COMEDI_AMPLC_DIO200_ISA
+ if (IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_PCI) &&
+ thisboard->bustype == pci_bustype) {
+ if (devpriv->pci_dev) {
+ if (dev->iobase)
+ comedi_pci_disable(devpriv->pci_dev);
+ pci_dev_put(devpriv->pci_dev);
+ }
+ } else if (IS_ENABLED(CONFIG_COMEDI_AMPLC_DIO200_ISA) &&
+ thisboard->bustype == isa_bustype) {
if (dev->iobase)
release_region(dev->iobase, DIO200_IO_SIZE);
-#endif
}
}
}