From fcc5940935a15a3a45356a0c55b4120156c93e97 Mon Sep 17 00:00:00 2001
From: Philipp Wiesemann <philipp.wiesemann@arcor.de>
Date: Wed, 5 Aug 2015 21:04:10 +0200
Subject: [PATCH] Emscripten: Added missing error messages for audio and
 joystick init failures.

---
 src/audio/emscripten/SDL_emscriptenaudio.c | 4 ++++
 src/joystick/emscripten/SDL_sysjoystick.c  | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/src/audio/emscripten/SDL_emscriptenaudio.c b/src/audio/emscripten/SDL_emscriptenaudio.c
index 4da99df11..792f12c11 100644
--- a/src/audio/emscripten/SDL_emscriptenaudio.c
+++ b/src/audio/emscripten/SDL_emscriptenaudio.c
@@ -263,6 +263,10 @@ Emscripten_Init(SDL_AudioDriverImpl * impl)
         return 0;
     });
 
+    if (!available) {
+        SDL_SetError("No audio context available");
+    }
+
     return available;
 }
 
diff --git a/src/joystick/emscripten/SDL_sysjoystick.c b/src/joystick/emscripten/SDL_sysjoystick.c
index 16e971344..df963e5d4 100644
--- a/src/joystick/emscripten/SDL_sysjoystick.c
+++ b/src/joystick/emscripten/SDL_sysjoystick.c
@@ -200,6 +200,7 @@ SDL_SYS_JoystickInit(void)
 
     /* Check if gamepad is supported by browser */
     if (numjs == EMSCRIPTEN_RESULT_NOT_SUPPORTED) {
+        SDL_SetError("Gamepads not supported");
         return -1;
     }
 
@@ -221,6 +222,7 @@ SDL_SYS_JoystickInit(void)
 
     if(retval != EMSCRIPTEN_RESULT_SUCCESS) {
         SDL_SYS_JoystickQuit();
+        SDL_SetError("Could not set gamepad connect callback");
         return -1;
     }
 
@@ -229,6 +231,7 @@ SDL_SYS_JoystickInit(void)
                                                          Emscripten_JoyStickDisconnected);
     if(retval != EMSCRIPTEN_RESULT_SUCCESS) {
         SDL_SYS_JoystickQuit();
+        SDL_SetError("Could not set gamepad disconnect callback");
         return -1;
     }