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@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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
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