From d2923a32d3682e161c26491da4d1fa55f82570b5 Mon Sep 17 00:00:00 2001
From: Damjan Adamic <projectkk2glider@gmail.com>
Date: Sun, 17 Apr 2016 18:37:24 +0200
Subject: [PATCH] Fixed bug in Disk Cache: reads bigger than cache block size
 were not handled properly

---
 radio/src/disk_cache.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/radio/src/disk_cache.cpp b/radio/src/disk_cache.cpp
index d2e5d9123..4933a2d9f 100644
--- a/radio/src/disk_cache.cpp
+++ b/radio/src/disk_cache.cpp
@@ -96,6 +96,12 @@ DRESULT DiskCache::read(BYTE drv, BYTE* buff, DWORD sector, UINT count)
   //   return __disk_read(drv, buff, sector, count);  
   // }
 
+  // if read is bigger than cache block, then read it directly without using cache
+  if (count > DISK_CACHE_BLOCK_SECTORS) {
+    TRACE_DISK_CACHE("\t\t big read(%u, %u)", this, (uint32_t)sector, (uint32_t)count);
+    return __disk_read(drv, buff, sector, count);
+  }
+
   for(int n=0; n < DISK_CACHE_BLOCKS_NUM; ++n) {
     if (blocks[n].read(buff, sector, count)) {
       ++stats.noHits;