Add a new member to the comedi_device struct for a comedi_8254 'pacer'. This
provides a convient place to store the data allocated by the comedi_8254 module
for boards that use an 8254 device to create the data acquisition pacer clock.
Automatically free this pointer in comedi_device_detach_cleanup() so that the
drivers don't need to do it when then are detached.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
v2: no change
drivers/staging/comedi/comedidev.h | 1 +
drivers/staging/comedi/drivers.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h
index e138eb0..30595c0 100644
--- a/drivers/staging/comedi/comedidev.h
+++ b/drivers/staging/comedi/comedidev.h
@@ -256,6 +256,7 @@ struct comedi_driver {
struct comedi_device {
int use_count;
struct comedi_driver *driver;
+ struct comedi_8254 *pacer;
void *private;
struct device *class_dev;
diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c
index f32e714..e87c68c 100644
--- a/drivers/staging/comedi/drivers.c
+++ b/drivers/staging/comedi/drivers.c
@@ -139,7 +139,9 @@ static void comedi_device_detach_cleanup(struct comedi_device *dev)
dev->n_subdevices = 0;
}
kfree(dev->private);
+ kfree(dev->pacer);
dev->private = NULL;
+ dev->pacer = NULL;
dev->driver = NULL;
dev->board_name = NULL;
dev->board_ptr = NULL;
--
2.3.0
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