Introduce a helper function that checks the subdevice runflags to see if the subdevice is running a command.
Signed-off-by: H Hartley Sweeten <[email protected]> Cc: Ian Abbott <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> --- drivers/staging/comedi/comedi_fops.c | 8 ++++++++ drivers/staging/comedi/comedidev.h | 2 ++ 2 files changed, 10 insertions(+) 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); -- 1.8.0 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
