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| author | Ian Abbott <abbotti@mev.co.uk> | 2014-05-06 13:12:00 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-23 21:25:47 +0900 |
| commit | 458c13e935d9f33fffb099e49ecb53c67ddd1a21 (patch) | |
| tree | d60ed577a2e195673d0853ccba0ac1cd6557f779 /drivers/staging/comedi/comedi_buf.c | |
| parent | 3672effdeae5395d661a2103f69082146ef949fc (diff) | |
| download | op-kernel-dev-458c13e935d9f33fffb099e49ecb53c67ddd1a21.zip op-kernel-dev-458c13e935d9f33fffb099e49ecb53c67ddd1a21.tar.gz | |
staging: comedi: pass subdevice to comedi_buf_get()
Change the parameters of `comedi_buf_get()` to pass a pointer to the
comedi subdevice instead of a pointer to the "async" structure belonging
to the subdevice.
The function gets a sample value from the comedi buffer, but currently
only deals with 16-bit sample types. A future version could deal with
16 or 32-bit sample types depending on the value of the SDF_LSAMPL
subdevice flag.
The main aim at the moment is to replace all the `struct comedi_async *`
parameters with `struct comedi_subdevice *` parameters in the comedi
driver API.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/comedi_buf.c')
| -rw-r--r-- | drivers/staging/comedi/comedi_buf.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/staging/comedi/comedi_buf.c b/drivers/staging/comedi/comedi_buf.c index f127bf9..acb042c 100644 --- a/drivers/staging/comedi/comedi_buf.c +++ b/drivers/staging/comedi/comedi_buf.c @@ -431,8 +431,9 @@ int comedi_buf_put(struct comedi_subdevice *s, unsigned short x) } EXPORT_SYMBOL_GPL(comedi_buf_put); -int comedi_buf_get(struct comedi_async *async, unsigned short *x) +int comedi_buf_get(struct comedi_subdevice *s, unsigned short *x) { + struct comedi_async *async = s->async; unsigned int n = comedi_buf_read_n_available(async); if (n < sizeof(short)) |
