binding iiodevices: Change subscribe to scan all devices.

It fixes a problem when there are several devices with the same event,
but not all devices are available on system. Previously, service did not
check all devices and returned error on first not available device.

Bug-AGL: SPEC-3865
Change-Id: I91e38dc31824c3956829180569ad819b27da6b6c
Signed-off-by: Andriy Tryshnivskyy <andriy.tryshnivskyy@opensynergy.com>
(cherry picked from commit 87f8fa282d76da55fe61651a5ee49a29632e9d7c)

1 files changed, 11 insertions, 5 deletions

diff --git a/binding/iiodevices-binding.c b/binding/iiodevices-binding.c
index 000191e..d2d1ae4 100644
--- a/binding/iiodevices-binding.c
+++ b/binding/iiodevices-binding.c
@@ -550,10 +550,11 @@ static void subscribe(afb_req_t request)
     AFB_API_INFO(afbBindingV3root, "subscription with: value=%s, s_iioelts=%s, freq=%s",
             value, s_iioelts, freq);
 
-    bool found = false;
+    bool found_event = false;
+    bool found_device = false;
     for(int i = 0; i < sizeof(iio_infos)/sizeof(iio_infos[0]); i++) {
         if(!strcasecmp(value, iio_infos[i].id)) {
-            found = true;
+            found_event = true;
 
             uint64_t u_period = get_period(freq);
             enum iio_elements iioelts = (int)treat_iio_elts(s_iioelts);
@@ -568,9 +569,8 @@ static void subscribe(afb_req_t request)
                     client = add_new_client(&iio_infos[i], iioelts, u_period);
                 init_dev(client);
                 if(!client->dev) {
-                    afb_req_fail_f(request, "failed", "No %s device found", client->infos->dev_name);
                     deinit_client_sub(client);
-                    return;
+                    continue;
                 }
                 init_channel(client, iioelts);
                 if(!client->channels) {
@@ -581,6 +581,7 @@ static void subscribe(afb_req_t request)
             } else {
                 init_dev(client);
             }
+            found_device = true;
             //stored client in order to be get in unsubscription
             afb_req_context_set(request, client, NULL);
 
@@ -592,12 +593,17 @@ static void subscribe(afb_req_t request)
                 afb_req_fail(request, "failed", "subscription failed");
                 return;
             }
+            break;
         }
     }
-    if(!found) {
+    if(!found_event) {
         afb_req_fail(request, "failed", "Invalid event");
         return;
     }
+    if(!found_device) {
+        afb_req_fail(request, "failed", "No device found");
+        return;
+    }
     afb_req_success(request, NULL, NULL);
 }