This patch is needed to have all linked channels being reported by the
show() function of the attribute file add_link. Currently user space can
only read back the latest link that has been established to a certain
channel.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@xxxxxx>
Signed-off-by: Christian Gromm <christian.gromm@xxxxxxxxxxxxx>
---
drivers/staging/most/mostcore/core.c | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/most/mostcore/core.c b/drivers/staging/most/mostcore/core.c
index db0606ca..bd555ec 100644
--- a/drivers/staging/most/mostcore/core.c
+++ b/drivers/staging/most/mostcore/core.c
@@ -848,7 +848,23 @@ static ssize_t show_add_link(struct most_aim_obj *aim_obj,
struct most_aim_attribute *attr,
char *buf)
{
- return snprintf(buf, PAGE_SIZE, "%s\n", aim_obj->add_link);
+ struct most_c_obj *c;
+ struct most_inst_obj *i;
+ int offs = 0;
+
+ list_for_each_entry(i, &instance_list, list) {
+ list_for_each_entry(c, &i->channel_list, list) {
+ if (c->aim0.ptr == aim_obj->driver ||
+ c->aim1.ptr == aim_obj->driver) {
+ offs += snprintf(buf + offs, PAGE_SIZE - offs,
+ "%s:%s\n",
+ kobject_name(&i->kobj),
+ kobject_name(&c->kobj));
+ }
+ }
+ }
+
+ return offs;
}
/**
--
1.9.1
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