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| author | Ian Abbott <abbotti@mev.co.uk> | 2013-02-01 13:23:19 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-04 01:44:19 (GMT) |
| commit | da71751177f35f0ca5494968cc237511c423a744 (patch) | |
| tree | 139fcfc6582834a879ce0a5c4845c16201c1b459 | |
| parent | f65cc5447eaea9f7be1ff54e27c9658a66c5910f (diff) | |
| download | linux-da71751177f35f0ca5494968cc237511c423a744.tar.xz | |
staging: comedi: export comedi_set_hw_dev()
Chnage the inline `comedi_set_hw_dev()` to an exported function and
change it's return type from `void` to `int` so we can impose some
restrictions (in a later patch) and return an error if necessary.
Only a few comedi drivers call this, although they don't need to if the
hardware device has been attached automatically via
`comedi_auto_config()` and the comedi driver's `auto_attach()` method.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/comedi/comedidev.h | 9 | ||||
| -rw-r--r-- | drivers/staging/comedi/drivers.c | 10 |
2 files changed, 11 insertions, 8 deletions
diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index 484321d..1502fc4 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -324,14 +324,7 @@ static inline unsigned int bytes_per_sample(const struct comedi_subdevice *subd) * known bus type. Set automatically for auto-configured devices. * Automatically set to NULL when detaching hardware device. */ -static inline void comedi_set_hw_dev(struct comedi_device *dev, - struct device *hw_dev) -{ - struct device *old_hw_dev = dev->hw_dev; - - dev->hw_dev = get_device(hw_dev); - put_device(old_hw_dev); -} +int comedi_set_hw_dev(struct comedi_device *dev, struct device *hw_dev); unsigned int comedi_buf_write_alloc(struct comedi_async *, unsigned int); unsigned int comedi_buf_write_free(struct comedi_async *, unsigned int); diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c index cc6240a..5adf9fc 100644 --- a/drivers/staging/comedi/drivers.c +++ b/drivers/staging/comedi/drivers.c @@ -43,6 +43,16 @@ struct comedi_driver *comedi_drivers; +int comedi_set_hw_dev(struct comedi_device *dev, struct device *hw_dev) +{ + struct device *old_hw_dev = dev->hw_dev; + + dev->hw_dev = get_device(hw_dev); + put_device(old_hw_dev); + return 0; +} +EXPORT_SYMBOL_GPL(comedi_set_hw_dev); + int comedi_alloc_subdevices(struct comedi_device *dev, int num_subdevices) { struct comedi_subdevice *s; |