lascar-el-usb: Use std_dev_clear().

diff --git a/hardware/lascar-el-usb/api.c b/hardware/lascar-el-usb/api.c
index 7553e6cf2c2be4b44ee9fa3b89c277c0625fffca..761862d2ad2829a7a75de0e2a699ccfe2952b4c8 100644 (file)
--- a/hardware/lascar-el-usb/api.c
+++ b/hardware/lascar-el-usb/api.c
@@ -26,7 +26,6 @@
 SR_PRIV struct sr_dev_inst *lascar_scan(int bus, int address);
 SR_PRIV struct sr_dev_driver lascar_el_usb_driver_info;
 static struct sr_dev_driver *di = &lascar_el_usb_driver_info;
-static int dev_close(struct sr_dev_inst *sdi);
 
 static const int32_t hwopts[] = {
        SR_CONF_CONN,
@@ -39,32 +38,9 @@ static const int32_t hwcaps[] = {
        SR_CONF_LIMIT_SAMPLES,
 };
 
-/* Properly close and free all devices. */
 static int clear_instances(void)
 {
-       struct sr_dev_inst *sdi;
-       struct drv_context *drvc;
-       struct dev_context *devc;
-       GSList *l;
-
-       if (!(drvc = di->priv))
-               return SR_OK;
-
-       for (l = drvc->instances; l; l = l->next) {
-               if (!(sdi = l->data))
-                       continue;
-               if (!(devc = sdi->priv))
-                       continue;
-
-               dev_close(sdi);
-               sr_usb_dev_inst_free(sdi->conn);
-               sr_dev_inst_free(sdi);
-       }
-
-       g_slist_free(drvc->instances);
-       drvc->instances = NULL;
-
-       return SR_OK;
+       return std_dev_clear(di, NULL);
 }
 
 static int init(struct sr_context *sr_ctx)
@@ -173,17 +149,18 @@ static int dev_close(struct sr_dev_inst *sdi)
 
 static int cleanup(void)
 {
+       int ret;
        struct drv_context *drvc;
 
        if (!(drvc = di->priv))
                /* Can get called on an unused driver, doesn't matter. */
                return SR_OK;
 
-       clear_instances();
+       ret = clear_instances();
        g_free(drvc);
        di->priv = NULL;
 
-       return SR_OK;
+       return ret;
 }
 
 static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi)