/*
* Copyright (c) 2012 Linutronix GmbH
* Copyright (c) 2014 sigma star gmbh
* Author: Richard Weinberger <richard@nod.at>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
*/
#include <linux/crc32.h>
#include "ubi.h"
/**
* init_seen - allocate memory for used for debugging.
* @ubi: UBI device description object
*/
static inline int *init_seen(struct ubi_device *ubi)
{
int *ret;
if (!ubi_dbg_chk_fastmap(ubi))
return NULL;
ret = kcalloc(ubi->peb_count, sizeof(int), GFP_KERNEL);
if (!ret)
return ERR_PTR(-ENOMEM);
return ret;
}
/**
* free_seen - free the seen logic integer array.
* @seen: integer array of @ubi->peb_count size
*/
static inline void free_seen(int *seen)
{
kfree(seen);
}
/**
* set_seen - mark a PEB as seen.
* @ubi: UBI device description object
* @pnum: The PEB to be makred as seen
* @seen: integer array of @ubi->peb_count size
*/
static inline void set_seen(struct ubi_device *ubi, int pnum, int *seen)
{
if (!ubi_dbg_chk_fastmap(ubi) || !seen)
return;
seen[pnum] = 1;
}
/**
* self_check_seen - check whether all PEB have been seen by fastmap.
* @ubi: UBI device description object
* @seen: integer array of @ubi->peb_count size
*/
static int self_check_seen(struct ubi_device *ubi, int *seen)
{
int pnum, ret = 0;
if (!ubi_dbg_chk_fastmap(ubi) || !seen)
return 0;
for (pnum = 0; pnum < ubi->peb_count; pnum++) {
if (!seen[pnum] && ubi->lookuptbl[pnum]) {
ubi_err(ubi, "self-check failed for PEB %d, fastmap didn't see it", pnum);
ret = -EINVAL;
}
}
return ret;
}
/**
* ubi_calc_fm_size - calculates the fastmap size in bytes for an UBI device.
* @ubi: UBI devic
| 