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UBI: simplify internal interfaces 

Instead of passing vol_id to all functions and then find
struct ubi_volume, pass struct ubi_volume pointer.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Artem Bityutskiy 2008-01-24 17:04:01 +02:00
parent 0411e73531
commit 1b68d0eea5
3 changed files with 36 additions and 36 deletions
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4
drivers/mtd/ubi/cdev.c
View File

@ -354,7 +354,7 @@ static ssize_t vol_cdev_write(struct file *file, const char __user *buf,
if (!vol->updating)
return vol_cdev_direct_write(file, buf, count, offp);
err = ubi_more_update_data(ubi, vol->vol_id, buf, count);
err = ubi_more_update_data(ubi, vol, buf, count);
if (err < 0) {
ubi_err("cannot write %zd bytes of update data, error %d",
count, err);
@ -427,7 +427,7 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file,
if (err < 0)
break;
err = ubi_start_update(ubi, vol->vol_id, bytes);
err = ubi_start_update(ubi, vol, bytes);
if (bytes == 0)
revoke_exclusive(desc, UBI_READWRITE);
break;

5
drivers/mtd/ubi/ubi.h
View File

@ -423,8 +423,9 @@ int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol);
void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol);
/* upd.c */
int ubi_start_update(struct ubi_device *ubi, int vol_id, long long bytes);
int ubi_more_update_data(struct ubi_device *ubi, int vol_id,
int ubi_start_update(struct ubi_device *ubi, struct ubi_volume *vol,
long long bytes);
int ubi_more_update_data(struct ubi_device *ubi, struct ubi_volume *vol,
const void __user *buf, int count);
/* misc.c */

63
drivers/mtd/ubi/upd.c
View File

@ -45,30 +45,30 @@
/**
* set_update_marker - set update marker.
* @ubi: UBI device description object
* @vol_id: volume ID
* @vol: volume description object
*
* This function sets the update marker flag for volume @vol_id. Returns zero
* This function sets the update marker flag for volume @vol. Returns zero
* in case of success and a negative error code in case of failure.
*/
static int set_update_marker(struct ubi_device *ubi, int vol_id)
static int set_update_marker(struct ubi_device *ubi, struct ubi_volume *vol)
{
int err;
struct ubi_vtbl_record vtbl_rec;
struct ubi_volume *vol = ubi->volumes[vol_id];
dbg_msg("set update marker for volume %d", vol_id);
dbg_msg("set update marker for volume %d", vol->vol_id);
if (vol->upd_marker) {
ubi_assert(ubi->vtbl[vol_id].upd_marker);
ubi_assert(ubi->vtbl[vol->vol_id].upd_marker);
dbg_msg("already set");
return 0;
}
memcpy(&vtbl_rec, &ubi->vtbl[vol_id], sizeof(struct ubi_vtbl_record));
memcpy(&vtbl_rec, &ubi->vtbl[vol->vol_id],
sizeof(struct ubi_vtbl_record));
vtbl_rec.upd_marker = 1;
mutex_lock(&ubi->volumes_mutex);
err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
err = ubi_change_vtbl_record(ubi, vol->vol_id, &vtbl_rec);
mutex_unlock(&ubi->volumes_mutex);
vol->upd_marker = 1;
return err;
@ -77,23 +77,24 @@ static int set_update_marker(struct ubi_device *ubi, int vol_id)
/**
* clear_update_marker - clear update marker.
* @ubi: UBI device description object
* @vol_id: volume ID
* @vol: volume description object
* @bytes: new data size in bytes
*
* This function clears the update marker for volume @vol_id, sets new volume
* This function clears the update marker for volume @vol, sets new volume
* data size and clears the "corrupted" flag (static volumes only). Returns
* zero in case of success and a negative error code in case of failure.
*/
static int clear_update_marker(struct ubi_device *ubi, int vol_id, long long bytes)
static int clear_update_marker(struct ubi_device *ubi, struct ubi_volume *vol,
long long bytes)
{
int err;
uint64_t tmp;
struct ubi_vtbl_record vtbl_rec;
struct ubi_volume *vol = ubi->volumes[vol_id];
dbg_msg("clear update marker for volume %d", vol_id);
dbg_msg("clear update marker for volume %d", vol->vol_id);
memcpy(&vtbl_rec, &ubi->vtbl[vol_id], sizeof(struct ubi_vtbl_record));
memcpy(&vtbl_rec, &ubi->vtbl[vol->vol_id],
sizeof(struct ubi_vtbl_record));
ubi_assert(vol->upd_marker && vtbl_rec.upd_marker);
vtbl_rec.upd_marker = 0;
@ -109,7 +110,7 @@ static int clear_update_marker(struct ubi_device *ubi, int vol_id, long long byt
}
mutex_lock(&ubi->volumes_mutex);
err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
err = ubi_change_vtbl_record(ubi, vol->vol_id, &vtbl_rec);
mutex_unlock(&ubi->volumes_mutex);
vol->upd_marker = 0;
return err;
@ -118,23 +119,23 @@ static int clear_update_marker(struct ubi_device *ubi, int vol_id, long long byt
/**
* ubi_start_update - start volume update.
* @ubi: UBI device description object
* @vol_id: volume ID
* @vol: volume description object
* @bytes: update bytes
*
* This function starts volume update operation. If @bytes is zero, the volume
* is just wiped out. Returns zero in case of success and a negative error code
* in case of failure.
*/
int ubi_start_update(struct ubi_device *ubi, int vol_id, long long bytes)
int ubi_start_update(struct ubi_device *ubi, struct ubi_volume *vol,
long long bytes)
{
int i, err;
uint64_t tmp;
struct ubi_volume *vol = ubi->volumes[vol_id];
dbg_msg("start update of volume %d, %llu bytes", vol_id, bytes);
dbg_msg("start update of volume %d, %llu bytes", vol->vol_id, bytes);
vol->updating = 1;
err = set_update_marker(ubi, vol_id);
err = set_update_marker(ubi, vol);
if (err)
return err;
@ -146,7 +147,7 @@ int ubi_start_update(struct ubi_device *ubi, int vol_id, long long bytes)
}
if (bytes == 0) {
err = clear_update_marker(ubi, vol_id, 0);
err = clear_update_marker(ubi, vol, 0);
if (err)
return err;
err = ubi_wl_flush(ubi);
@ -169,7 +170,7 @@ int ubi_start_update(struct ubi_device *ubi, int vol_id, long long bytes)
/**
* write_leb - write update data.
* @ubi: UBI device description object
* @vol_id: volume ID
* @vol: volume description object
* @lnum: logical eraseblock number
* @buf: data to write
* @len: data size
@ -195,11 +196,10 @@ int ubi_start_update(struct ubi_device *ubi, int vol_id, long long bytes)
* This function returns zero in case of success and a negative error code in
* case of failure.
*/
static int write_leb(struct ubi_device *ubi, int vol_id, int lnum, void *buf,
int len, int used_ebs)
static int write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
void *buf, int len, int used_ebs)
{
int err, l;
struct ubi_volume *vol = ubi->volumes[vol_id];
if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
l = ALIGN(len, ubi->min_io_size);
@ -244,11 +244,10 @@ static int write_leb(struct ubi_device *ubi, int vol_id, int lnum, void *buf,
* the last call if the whole volume update was successfully finished, and a
* negative error code in case of failure.
*/
int ubi_more_update_data(struct ubi_device *ubi, int vol_id,
int ubi_more_update_data(struct ubi_device *ubi, struct ubi_volume *vol,
const void __user *buf, int count)
{
uint64_t tmp;
struct ubi_volume *vol = ubi->volumes[vol_id];
int lnum, offs, err = 0, len, to_write = count;
dbg_msg("write %d of %lld bytes, %lld already passed",
@ -293,8 +292,8 @@ int ubi_more_update_data(struct ubi_device *ubi, int vol_id,
* is the last chunk, it's time to flush the buffer.
*/
ubi_assert(flush_len <= vol->usable_leb_size);
err = write_leb(ubi, vol_id, lnum, vol->upd_buf,
flush_len, vol->upd_ebs);
err = write_leb(ubi, vol, lnum, vol->upd_buf, flush_len,
vol->upd_ebs);
if (err)
return err;
}
@ -321,8 +320,8 @@ int ubi_more_update_data(struct ubi_device *ubi, int vol_id,
if (len == vol->usable_leb_size ||
vol->upd_received + len == vol->upd_bytes) {
err = write_leb(ubi, vol_id, lnum, vol->upd_buf, len,
vol->upd_ebs);
err = write_leb(ubi, vol, lnum, vol->upd_buf,
len, vol->upd_ebs);
if (err)
break;
}
@ -336,7 +335,7 @@ int ubi_more_update_data(struct ubi_device *ubi, int vol_id,
ubi_assert(vol->upd_received <= vol->upd_bytes);
if (vol->upd_received == vol->upd_bytes) {
/* The update is finished, clear the update marker */
err = clear_update_marker(ubi, vol_id, vol->upd_bytes);
err = clear_update_marker(ubi, vol, vol->upd_bytes);
if (err)
return err;
err = ubi_wl_flush(ubi);