From 398e6f1230160e614ef0f878725cdd5f51fda8cd Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Tue, 11 Sep 2012 15:08:37 -0700 Subject: [PATCH] staging: comedi: adv_pci1710: remove unnecessary 'valid' The 'valid' variable in the private data is only used in the detach of the board to determine if the pci1710_reset() function can be called. That function only requires a valid dev->iobase to work. Use that for the check instead and remove the unneeded variable from the private data. Signed-off-by: H Hartley Sweeten Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/adv_pci1710.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/drivers/staging/comedi/drivers/adv_pci1710.c b/drivers/staging/comedi/drivers/adv_pci1710.c index 571c22c..09fe373 100644 --- a/drivers/staging/comedi/drivers/adv_pci1710.c +++ b/drivers/staging/comedi/drivers/adv_pci1710.c @@ -300,7 +300,6 @@ static const struct boardtype boardtypes[] = { }; struct pci1710_private { - char valid; /* card is usable */ char neverending_ai; /* we do unlimited AI */ unsigned int CntrlReg; /* Control register */ unsigned int i8254_osc_base; /* frequence of onboard oscilator */ @@ -1433,8 +1432,6 @@ static int pci1710_attach_pci(struct comedi_device *dev, subdev++; } - devpriv->valid = 1; - dev_info(dev->class_dev, "%s attached, irq %sabled\n", dev->board_name, dev->irq ? "en" : "dis"); @@ -1443,15 +1440,12 @@ static int pci1710_attach_pci(struct comedi_device *dev, static void pci1710_detach(struct comedi_device *dev) { - struct pci1710_private *devpriv = dev->private; struct pci_dev *pcidev = comedi_to_pci_dev(dev); - if (devpriv) { - if (devpriv->valid) - pci1710_reset(dev); - if (dev->irq) - free_irq(dev->irq, dev); - } + if (dev->iobase) + pci1710_reset(dev); + if (dev->irq) + free_irq(dev->irq, dev); if (pcidev) { if (dev->iobase) comedi_pci_disable(pcidev); -- 2.7.4