From f87db3d80ae23f1c5cca274fb9c37fcbc6e7af67 Mon Sep 17 00:00:00 2001
From: Matthias <bromor@users.noreply.github.com>
Date: Sun, 8 Oct 2017 18:47:53 +0200
Subject: [PATCH] add missing memory allocation for SPI mode (#231)

---
 ws2811.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/ws2811.c b/ws2811.c
index 3319bdeb..8fe78045 100644
--- a/ws2811.c
+++ b/ws2811.c
@@ -806,6 +806,16 @@ static ws2811_return_t spi_init(ws2811_t *ws2811)
     {
       channel->strip_type=WS2811_STRIP_RGB;
     }
+  
+    // Set default uncorrected gamma table
+    if (!channel->gamma)
+    {
+      channel->gamma = malloc(sizeof(uint8_t) * 256);
+      int x;
+      for(x = 0; x < 256; x++){
+        channel->gamma[x] = x;
+      }
+    }
 
     channel->wshift = (channel->strip_type >> 24) & 0xff;
     channel->rshift = (channel->strip_type >> 16) & 0xff;