The `async` member of `struct comedi_subdevice` may point to a `struct
comedi_async` or may be NULL. The `subdevice` member of `struct
comedi_async` points back to the `struct comedi_subdevice` associated
with it in a one-to-one relationship.
All uses of the `subdevice` member of `struct comedi_async` apart from
its initialization have now been removed (by passing around a pointer to
the subdevice instead of to the "async" structure), so get rid of it.
Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx>
---
v2: rebased to current staging-next.
---
drivers/staging/comedi/comedidev.h | 2 --
drivers/staging/comedi/drivers.c | 1 -
2 files changed, 3 deletions(-)
diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h
index a5d479c..d07d47f 100644
--- a/drivers/staging/comedi/comedidev.h
+++ b/drivers/staging/comedi/comedidev.h
@@ -108,8 +108,6 @@ struct comedi_buf_map {
};
struct comedi_async {
- struct comedi_subdevice *subdevice;
-
void *prealloc_buf; /* pre-allocated buffer */
unsigned int prealloc_bufsz; /* buffer size, in bytes */
struct comedi_buf_map *buf_map; /* map of buffer pages */
diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c
index cb5d214..299726f 100644
--- a/drivers/staging/comedi/drivers.c
+++ b/drivers/staging/comedi/drivers.c
@@ -307,7 +307,6 @@ static int __comedi_device_postconfig_async(struct comedi_device *dev,
return -ENOMEM;
init_waitqueue_head(&async->wait_head);
- async->subdevice = s;
s->async = async;
async->max_bufsize = comedi_default_buf_maxsize_kb * 1024;
--
1.9.2
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