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| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2012-12-19 22:42:47 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-07 22:25:48 (GMT) |
| commit | e0dac318ee2807d5ec1b09c1a608fdc25ef2ac7b (patch) | |
| tree | df457dba82e8319f2f8e0ae187b2fce48f7df305 | |
| parent | 74120719a70c984e04c16afe53dbdea868bed6da (diff) | |
| download | linux-fsl-qoriq-e0dac318ee2807d5ec1b09c1a608fdc25ef2ac7b.tar.xz | |
staging: comedi: comedi_fops: introduce comedi_is_subdevice_running()
Introduce a helper function that checks the subdevice runflags to
see if the subdevice is running a command.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/comedi/comedi_fops.c | 8 | ||||
| -rw-r--r-- | drivers/staging/comedi/comedidev.h | 2 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index 0161f94..368dbc9 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -375,6 +375,14 @@ unsigned comedi_get_subdevice_runflags(struct comedi_subdevice *s) } EXPORT_SYMBOL(comedi_get_subdevice_runflags); +bool comedi_is_subdevice_running(struct comedi_subdevice *s) +{ + unsigned runflags = comedi_get_subdevice_runflags(s); + + return (runflags & SRF_RUNNING) ? true : false; +} +EXPORT_SYMBOL_GPL(comedi_is_subdevice_running); + /* This function restores a subdevice to an idle state. */ diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index 2bbb7c9..791030d 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -362,6 +362,8 @@ enum subdevice_runflags { SRF_RUNNING = 0x08000000 }; +bool comedi_is_subdevice_running(struct comedi_subdevice *s); + int comedi_check_chanlist(struct comedi_subdevice *s, int n, unsigned int *chanlist); |