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staging: comedi: comedidev.h: introduce comedi_to_pci_dev() helper

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Introduce a wrapper for to_pci_dev() to allow the comedi_pci_drivers
to store the pci_dev pointer in the comedi_device hw_dev variable and
retrieve it easily.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbot <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2012-07-19 10:39:33 -07:00 committed by Greg Kroah-Hartman
parent 289a64295c
commit ddb01367b8
1 changed files with 5 additions and 0 deletions
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5
drivers/staging/comedi/comedidev.h
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@ -446,6 +446,11 @@ static inline void comedi_set_hw_dev(struct comedi_device *dev,
}
}
static inline struct pci_dev *comedi_to_pci_dev(struct comedi_device *dev)
{
return dev->hw_dev ? to_pci_dev(dev->hw_dev) : NULL;
}
int comedi_buf_put(struct comedi_async *async, short x);
int comedi_buf_get(struct comedi_async *async, short *x);