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Commit 228beeb0 authored by shengyong's avatar shengyong Committed by Ian Maund
Browse files

UBI: add a helper function for updatting on-flash layout volumes 



Signed-off-by: default avatarSheng Yong <shengyong1@huawei.com>
Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
Git-commit: 2848594a20eb179eb591fd2a37d7edfe045811a0
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: default avatarNikhilesh Reddy <reddyn@codeaurora.org>
parent cc152250

drivers/mtd/ubi/vtbl.c

+24 −21
Original line number Diff line number Diff line
@@ -69,6 +69,26 @@ static void self_vtbl_check(const struct ubi_device *ubi); 
/* Empty volume table record */

static struct ubi_vtbl_record empty_vtbl_record;



/**

 * ubi_update_layout_vol - helper for updatting layout volumes on flash

 * @ubi: UBI device description object

 */

static int ubi_update_layout_vol(struct ubi_device *ubi)

{

	struct ubi_volume *layout_vol;

	int i, err;



	layout_vol = ubi->volumes[vol_id2idx(ubi, UBI_LAYOUT_VOLUME_ID)];

	for (i = 0; i < UBI_LAYOUT_VOLUME_EBS; i++) {

		err = ubi_eba_atomic_leb_change(ubi, layout_vol, i, ubi->vtbl,

						ubi->vtbl_size);

		if (err)

			return err;

	}



	return 0;

}



/**

 * ubi_change_vtbl_record - change volume table record.

 * @ubi: UBI device description object
@@ -83,12 +103,10 @@ static struct ubi_vtbl_record empty_vtbl_record; 
int ubi_change_vtbl_record(struct ubi_device *ubi, int idx,

			   struct ubi_vtbl_record *vtbl_rec)

{

	int i, err;

	int err;

	uint32_t crc;

	struct ubi_volume *layout_vol;



	ubi_assert(idx >= 0 && idx < ubi->vtbl_slots);

	layout_vol = ubi->volumes[vol_id2idx(ubi, UBI_LAYOUT_VOLUME_ID)];



	if (!vtbl_rec)

		vtbl_rec = &empty_vtbl_record;
@@ -98,15 +116,10 @@ int ubi_change_vtbl_record(struct ubi_device *ubi, int idx, 
	}



	memcpy(&ubi->vtbl[idx], vtbl_rec, sizeof(struct ubi_vtbl_record));

	for (i = 0; i < UBI_LAYOUT_VOLUME_EBS; i++) {

		err = ubi_eba_atomic_leb_change(ubi, layout_vol, i, ubi->vtbl,

						ubi->vtbl_size);

		if (err)

			return err;

	}

	err = ubi_update_layout_vol(ubi);



	self_vtbl_check(ubi);

	return 0;

	return err ? err : 0;

}



/**
@@ -121,9 +134,7 @@ int ubi_change_vtbl_record(struct ubi_device *ubi, int idx, 
int ubi_vtbl_rename_volumes(struct ubi_device *ubi,

			    struct list_head *rename_list)

{

	int i, err;

	struct ubi_rename_entry *re;

	struct ubi_volume *layout_vol;



	list_for_each_entry(re, rename_list, list) {

		uint32_t crc;
@@ -145,15 +156,7 @@ int ubi_vtbl_rename_volumes(struct ubi_device *ubi, 
		vtbl_rec->crc = cpu_to_be32(crc);

	}



	layout_vol = ubi->volumes[vol_id2idx(ubi, UBI_LAYOUT_VOLUME_ID)];

	for (i = 0; i < UBI_LAYOUT_VOLUME_EBS; i++) {

		err = ubi_eba_atomic_leb_change(ubi, layout_vol, i, ubi->vtbl,

						ubi->vtbl_size);

		if (err)

			return err;

	}



	return 0;

	return ubi_update_layout_vol(ubi);

}



/**