ext4: Fix comparision of unsigned expression with < 0
In file ext4fs.c funtion ext4fs_read_file() compares an
unsigned expression with < 0 like below
lbaint_t blknr;
blknr = read_allocated_block(&(node->inode), i);
if (blknr < 0)
return -1;
blknr is of type ulong/uint64_t. read_allocated_block() returns
long int. So comparing blknr with < 0 will always be false. Instead
declare blknr as long int.
Similarly ext4/dev.c does a similar comparison. Drop the redundant
comparison.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/fs/ext4/dev.c b/fs/ext4/dev.c
index ee84d3f..ae2ba6a 100644
--- a/fs/ext4/dev.c
+++ b/fs/ext4/dev.c
@@ -60,9 +60,8 @@
}
/* 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;