From 620ee3cf514e8d6219d96a1dd7c9d5da808a8c4f Mon Sep 17 00:00:00 2001
From: Lior Halphon <LIJI32@gmail.com>
Date: Thu, 7 May 2020 23:43:49 +0300
Subject: [PATCH] Make the libretro frontend not crash on rumble-less frontends

---
 libretro/libretro.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libretro/libretro.c b/libretro/libretro.c
index 14bfaa8..9e0f9a3 100644
--- a/libretro/libretro.c
+++ b/libretro/libretro.c
@@ -142,6 +142,8 @@ static void GB_update_keys_status(GB_gameboy_t *gb, unsigned port)
 
 static void rumble_callback(GB_gameboy_t *gb, double amplitude)
 {
+    if (!rumble.set_rumble_state) return;
+    
     if (gb == &gameboy[0]) {
         rumble.set_rumble_state(0, RETRO_RUMBLE_STRONG, 65535 * amplitude);
     }