ext4: fix miscellaneous big endian warnings

None of these result in any bug, but they makes sparse complain.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

3 files changed, 14 insertions, 12 deletions

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 3825d6aa8336..45a5ca89797f 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -416,15 +416,16 @@ static __le32 ext4_dx_csum(struct inode *inode, struct ext4_dir_entry *dirent,
 {
         struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
         struct ext4_inode_info *ei = EXT4_I(inode);
-        __u32 csum, old_csum;
+        __u32 csum;
+        __le32 save_csum;
         int size;
 
         size = count_offset + (count * sizeof(struct dx_entry));
-        old_csum = t->dt_checksum;
+        save_csum = t->dt_checksum;
         t->dt_checksum = 0;
         csum = ext4_chksum(sbi, ei->i_csum_seed, (__u8 *)dirent, size);
         csum = ext4_chksum(sbi, csum, (__u8 *)t, sizeof(struct dx_tail));
-        t->dt_checksum = old_csum;
+        t->dt_checksum = save_csum;
 
         return cpu_to_le32(csum);
 }
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 6fea87db7daa..f355c28fa080 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1952,16 +1952,16 @@ static __le16 ext4_group_desc_csum(struct ext4_sb_info *sbi, __u32 block_group,
         if ((sbi->s_es->s_feature_ro_compat &
              cpu_to_le32(EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))) {
                 /* Use new metadata_csum algorithm */
-                __u16 old_csum;
+                __le16 save_csum;
                 __u32 csum32;
 
-                old_csum = gdp->bg_checksum;
+                save_csum = gdp->bg_checksum;
                 gdp->bg_checksum = 0;
                 csum32 = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&le_group,
                                      sizeof(le_group));
                 csum32 = ext4_chksum(sbi, csum32, (__u8 *)gdp,
                                      sbi->s_desc_size);
-                gdp->bg_checksum = old_csum;
+                gdp->bg_checksum = save_csum;
 
                 crc = csum32 & 0xFFFF;
                 goto out;
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 3a120b277240..c081e34f717f 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -122,17 +122,18 @@ static __le32 ext4_xattr_block_csum(struct inode *inode,
                                     struct ext4_xattr_header *hdr)
 {
         struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
-        __u32 csum, old;
+        __u32 csum;
+        __le32 save_csum;
+        __le64 dsk_block_nr = cpu_to_le64(block_nr);
 
-        old = hdr->h_checksum;
+        save_csum = hdr->h_checksum;
         hdr->h_checksum = 0;
-        block_nr = cpu_to_le64(block_nr);
-        csum = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&block_nr,
-                           sizeof(block_nr));
+        csum = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&dsk_block_nr,
+                           sizeof(dsk_block_nr));
         csum = ext4_chksum(sbi, csum, (__u8 *)hdr,
                            EXT4_BLOCK_SIZE(inode->i_sb));
 
-        hdr->h_checksum = old;
+        hdr->h_checksum = save_csum;
         return cpu_to_le32(csum);
 }