staging: comedi: pass subdevice to comedi_buf_reset()
Change the parameters of `comedi_buf_reset()` to pass a pointer to the
comedi subdevice instead of a pointer to the "async" structure belonging
to the subdevice.
The main aim at the moment is to replace all the `struct comedi_async *`
parameters with `struct comedi_subdevice *` parameters in the comedi
driver API.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/comedi/comedi_buf.c b/drivers/staging/comedi/comedi_buf.c
index f295285..fa5d6d4 100644
--- a/drivers/staging/comedi/comedi_buf.c
+++ b/drivers/staging/comedi/comedi_buf.c
@@ -222,8 +222,10 @@
return 0;
}
-void comedi_buf_reset(struct comedi_async *async)
+void comedi_buf_reset(struct comedi_subdevice *s)
{
+ struct comedi_async *async = s->async;
+
async->buf_write_alloc_count = 0;
async->buf_write_count = 0;
async->buf_read_alloc_count = 0;
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c
index ada6024..98229bd 100644
--- a/drivers/staging/comedi/comedi_fops.c
+++ b/drivers/staging/comedi/comedi_fops.c
@@ -583,7 +583,7 @@
comedi_set_subdevice_runflags(s, SRF_RUNNING, 0);
if (async) {
- comedi_buf_reset(async);
+ comedi_buf_reset(s);
async->inttrig = NULL;
kfree(async->cmd.chanlist);
async->cmd.chanlist = NULL;
@@ -1557,7 +1557,7 @@
goto cleanup;
}
- comedi_buf_reset(async);
+ comedi_buf_reset(s);
async->cb_mask =
COMEDI_CB_EOA | COMEDI_CB_BLOCK | COMEDI_CB_ERROR |
diff --git a/drivers/staging/comedi/comedi_internal.h b/drivers/staging/comedi/comedi_internal.h
index 36e7a99..3cc81de 100644
--- a/drivers/staging/comedi/comedi_internal.h
+++ b/drivers/staging/comedi/comedi_internal.h
@@ -15,7 +15,7 @@
int comedi_buf_alloc(struct comedi_device *dev, struct comedi_subdevice *s,
unsigned long new_size);
-void comedi_buf_reset(struct comedi_async *async);
+void comedi_buf_reset(struct comedi_subdevice *s);
bool comedi_buf_is_mmapped(struct comedi_async *async);
void comedi_buf_map_get(struct comedi_buf_map *bm);
int comedi_buf_map_put(struct comedi_buf_map *bm);