From a6e11e3b9ffe994f1f2f8ab74ebdc9d1937c16e0 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Thu, 31 May 2012 14:08:31 +0100 Subject: [PATCH] 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 Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/amplc_dio200.c | 122 ++++++------------ 1 file changed, 41 insertions(+), 81 deletions(-) diff --git a/drivers/staging/comedi/drivers/amplc_dio200.c b/drivers/staging/comedi/drivers/amplc_dio200.c index f6f6144344b4..95d4370bf7af 100644 --- a/drivers/staging/comedi/drivers/amplc_dio200.c +++ b/drivers/staging/comedi/drivers/amplc_dio200.c @@ -215,14 +215,6 @@ order they appear in the channel list. #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_model { }; 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 @@ struct dio200_board { }; 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 @@ static const struct dio200_board dio200_boards[] = { .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 @@ struct dio200_layout_struct { }; 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 @@ static const struct dio200_layout_struct dio200_layouts[] = { .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 @@ static const struct dio200_layout_struct dio200_layouts[] = { * 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 @@ MODULE_DEVICE_TABLE(pci, dio200_pci_table); 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 @@ static struct comedi_driver driver_amplc_dio200 = { .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 @@ module_exit(driver_amplc_dio200_cleanup_module); * 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 @@ dio200_find_pci(struct comedi_device *dev, int bus, int slot, } 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 @@ dio200_request_region(unsigned minor, unsigned long from, unsigned long extent) } return 0; } -#endif /* * 'insn_bits' function for an 'INTERRUPT' subdevice. @@ -1346,10 +1332,6 @@ static int dio200_attach(struct comedi_device *dev, struct comedi_devconfig *it) 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 @@ static int dio200_attach(struct comedi_device *dev, struct comedi_devconfig *it) 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 @@ static int dio200_attach(struct comedi_device *dev, struct comedi_devconfig *it) } 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 @@ static int dio200_attach(struct comedi_device *dev, struct comedi_devconfig *it) } 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 @@ static void dio200_detach(struct comedi_device *dev) } } 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 } } } -- 2.30.2