From cb26157880e475adc97104ef2954707bc8ec5628 Mon Sep 17 00:00:00 2001
From: Chris Desjardins <chris@ridedott.com>
Date: Mon, 30 Dec 2019 12:56:27 +0100
Subject: [PATCH] Change assert to runtime check.

I had a system that was constantly hitting this assert, after making
this change it recovered immediately.
---
 lfs.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lfs.c b/lfs.c
index 7190312..0bb570c 100644
--- a/lfs.c
+++ b/lfs.c
@@ -29,8 +29,7 @@ static int lfs_bd_read(lfs_t *lfs,
         lfs_block_t block, lfs_off_t off,
         void *buffer, lfs_size_t size) {
     uint8_t *data = buffer;
-    LFS_ASSERT(block != LFS_BLOCK_NULL);
-    if (off+size > lfs->cfg->block_size) {
+    if ((off+size > lfs->cfg->block_size) || (block == LFS_BLOCK_NULL)) {
         return LFS_ERR_CORRUPT;
     }