From bc5f96a15658f390aba8688408526542c9329d7e Mon Sep 17 00:00:00 2001 From: Christian Gromm Date: Mon, 12 Sep 2016 16:26:13 +0200 Subject: [PATCH] staging: most: core: show all linked channels 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 Signed-off-by: Christian Gromm Signed-off-by: Greg Kroah-Hartman --- 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 db0606ca9f79..bd555ecfe0b9 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; } /** -- 2.30.2