From 0cc4f3bd5f562a391375a2187e411b6a037b29ce Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 9 Dec 2013 15:30:55 -0700 Subject: [PATCH] staging: comedi: pcmmio: tidy up init_asics() Rename this function so it has namespace associated with the driver. The board supported by this driver only has one WinSystems WS16C48 asic on it that handles the digital i/o. Remove the unnecessary for () loop that would reset multiple asics. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/pcmmio.c | 51 +++++++++++++++------------------ 1 file changed, 23 insertions(+), 28 deletions(-) diff --git a/drivers/staging/comedi/drivers/pcmmio.c b/drivers/staging/comedi/drivers/pcmmio.c index 3e3f4c9..af06062 100644 --- a/drivers/staging/comedi/drivers/pcmmio.c +++ b/drivers/staging/comedi/drivers/pcmmio.c @@ -370,35 +370,30 @@ static void switch_page(struct comedi_device *dev, int page) outb(page << REG_PAGE_BITOFFSET, devpriv->asic_iobase + REG_PAGELOCK); } -static void init_asics(struct comedi_device *dev) -{ /* sets up an - ASIC chip to defaults */ +static void pcmmio_reset(struct comedi_device *dev) +{ struct pcmmio_private *devpriv = dev->private; - int asic; - - for (asic = 0; asic < 1; ++asic) { - int port, page; - unsigned long baseaddr = devpriv->asic_iobase; - - switch_page(dev, 0); /* switch back to page 0 */ - - /* first, clear all the DIO port bits */ - for (port = 0; port < PORTS_PER_ASIC; ++port) - outb(0, baseaddr + REG_PORT0 + port); - - /* Next, clear all the paged registers for each page */ - for (page = 1; page < NUM_PAGES; ++page) { - int reg; - /* now clear all the paged registers */ - switch_page(dev, page); - for (reg = FIRST_PAGED_REG; - reg < FIRST_PAGED_REG + NUM_PAGED_REGS; ++reg) - outb(0, baseaddr + reg); - } - - /* switch back to default page 0 */ - switch_page(dev, 0); + unsigned long baseaddr = devpriv->asic_iobase; + int port, page; + + switch_page(dev, 0); /* switch back to page 0 */ + + /* first, clear all the DIO port bits */ + for (port = 0; port < PORTS_PER_ASIC; ++port) + outb(0, baseaddr + REG_PORT0 + port); + + /* Next, clear all the paged registers for each page */ + for (page = 1; page < NUM_PAGES; ++page) { + int reg; + /* now clear all the paged registers */ + switch_page(dev, page); + for (reg = FIRST_PAGED_REG; + reg < FIRST_PAGED_REG + NUM_PAGED_REGS; ++reg) + outb(0, baseaddr + reg); } + + /* switch back to default page 0 */ + switch_page(dev, 0); } static void pcmmio_stop_intr(struct comedi_device *dev, @@ -1073,7 +1068,7 @@ static int pcmmio_attach(struct comedi_device *dev, struct comedi_devconfig *it) } - init_asics(dev); /* clear out all the registers, basically */ + pcmmio_reset(dev); if (it->options[1]) { ret = request_irq(it->options[1], interrupt_pcmmio, 0, -- 2.7.4