From 2678b306ba670fbf97596468661082cc621ddc9a Mon Sep 17 00:00:00 2001
From: VooDust <54911743+VooDust@users.noreply.github.com>
Date: Wed, 4 Sep 2019 21:13:10 +0200
Subject: [PATCH] missing retvalue check

---
 driver/camera.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/driver/camera.c b/driver/camera.c
index ee77597..7998d70 100755
--- a/driver/camera.c
+++ b/driver/camera.c
@@ -1201,7 +1201,11 @@ esp_err_t camera_init(const camera_config_t* config)
     }
 
     vsync_intr_disable();
-    gpio_install_isr_service(ESP_INTR_FLAG_LEVEL1 | ESP_INTR_FLAG_IRAM);
+    err = gpio_install_isr_service(ESP_INTR_FLAG_LEVEL1 | ESP_INTR_FLAG_IRAM);
+    if (err != ESP_OK) {
+        ESP_LOGE(TAG, "gpio_install_isr_service failed (%x)", err);
+        goto fail;
+    }
     err = gpio_isr_handler_add(s_state->config.pin_vsync, &vsync_isr, NULL);
     if (err != ESP_OK) {
         ESP_LOGE(TAG, "vsync_isr_handler_add failed (%x)", err);