diff --git a/fs/ext4/dev.c b/fs/ext4/dev.c
index ee84d3fbe182675582c546de8b4bf4f3ad78fe02..ae2ba6a9015c8bc3bd15cef9ca59a82680ddce33 100644
--- a/fs/ext4/dev.c
+++ b/fs/ext4/dev.c
@@ -60,9 +60,8 @@ int ext4fs_devread(lbaint_t sector, int byte_offset, int byte_len, char *buf)
 	}
 
 	/* Check partition boundaries */
-	if ((sector < 0) ||
-	    ((sector + ((byte_offset + byte_len - 1) >> log2blksz))
-	     >= part_info->size)) {
+	if ((sector + ((byte_offset + byte_len - 1) >> log2blksz))
+	    >= part_info->size) {
 		printf("%s read outside partition " LBAFU "\n", __func__,
 		       sector);
 		return 0;
diff --git a/fs/ext4/ext4fs.c b/fs/ext4/ext4fs.c
index 7187dcfb0565566f0f778bd2191df7093a19a2e1..081509dbb4db8927b6a8fa26342c39be8bb22284 100644
--- a/fs/ext4/ext4fs.c
+++ b/fs/ext4/ext4fs.c
@@ -71,7 +71,7 @@ int ext4fs_read_file(struct ext2fs_node *node, loff_t pos,
 	blockcnt = lldiv(((len + pos) + blocksize - 1), blocksize);
 
 	for (i = lldiv(pos, blocksize); i < blockcnt; i++) {
-		lbaint_t blknr;
+		long int blknr;
 		int blockoff = pos - (blocksize * i);
 		int blockend = blocksize;
 		int skipfirst = 0;