fs: ext4: constify the buffer passed to write functions

[project/bcm63xx/u-boot.git] / fs / ext4 / ext4_write.c

diff --git a/fs/ext4/ext4_write.c b/fs/ext4/ext4_write.c
index 95ffa3dfad514523a2b26f5ebb89c2cd5a394c60..b5b7ee813369a546d6ec0f04be044fd115696c0c 100644 (file)
--- a/fs/ext4/ext4_write.c
+++ b/fs/ext4/ext4_write.c
@@ -752,7 +752,7 @@ void ext4fs_deinit(void)
  * contigous sectors as ext4fs_read_file
  */
 static int ext4fs_write_file(struct ext2_inode *file_inode,
-                            int pos, unsigned int len, char *buf)
+                            int pos, unsigned int len, const char *buf)
 {
        int i;
        int blockcnt;
@@ -764,7 +764,7 @@ static int ext4fs_write_file(struct ext2_inode *file_inode,
        int delayed_start = 0;
        int delayed_extent = 0;
        int delayed_next = 0;
-       char *delayed_buf = NULL;
+       const char *delayed_buf = NULL;
 
        /* Adjust len so it we can't read past the end of the file. */
        if (len > filesize)
@@ -816,7 +816,6 @@ static int ext4fs_write_file(struct ext2_inode *file_inode,
                                         (uint32_t) delayed_extent);
                                previous_block_number = -1;
                        }
-                       memset(buf, 0, fs->blksz - skipfirst);
                }
                buf += fs->blksz - skipfirst;
        }
@@ -830,8 +829,8 @@ static int ext4fs_write_file(struct ext2_inode *file_inode,
        return len;
 }
 
-int ext4fs_write(const char *fname, unsigned char *buffer,
-                                       unsigned long sizebytes)
+int ext4fs_write(const char *fname, const char *buffer,
+                unsigned long sizebytes)
 {
        int ret = 0;
        struct ext2_inode *file_inode = NULL;
@@ -949,7 +948,7 @@ int ext4fs_write(const char *fname, unsigned char *buffer,
        if (ext4fs_put_metadata(temp_ptr, itable_blkno))
                goto fail;
        /* copy the file content into data blocks */
-       if (ext4fs_write_file(file_inode, 0, sizebytes, (char *)buffer) == -1) {
+       if (ext4fs_write_file(file_inode, 0, sizebytes, buffer) == -1) {
                printf("Error in copying content\n");
                /* FIXME: Deallocate data blocks */
                goto fail;