[PATCH] UBI: Extend UBI layer debug/messaging capabilities - cosmetics

Tanya Brokhman
2014-11-09T11:06:58Z

Some cosmetic fixes to the patch "UBI: Extend UBI layer debug/messaging
capabilities".

Signed-off-by: Tanya Brokhman <tlinder@codeaurora.org>
---
Changes from original patch:
- Added ptr verification @ ubi_err/ubi_msg/ubi_warn
Removed extra printing of ubi number
Removed new messages.

drivers/mtd/ubi/build.c | 6 +++---
drivers/mtd/ubi/cdev.c | 9 ++++-----
drivers/mtd/ubi/io.c | 3 +--
drivers/mtd/ubi/ubi.h | 9 ++++++---
drivers/mtd/ubi/vtbl.c | 7 +++----
drivers/mtd/ubi/wl.c | 10 ++--------
6 files changed, 19 insertions(+), 25 deletions(-)

diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 3405be4..ba01a8d 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -923,7 +923,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,

/* Make sure ubi_num is not busy */
if (ubi_devices[ubi_num]) {
- ubi_err(ubi, "ubi%d already exists", ubi_num);
+ ubi_err(ubi, "already exists");
return -EEXIST;
}
}
@@ -973,7 +973,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
mutex_init(&ubi->fm_mutex);
init_rwsem(&ubi->fm_sem);

- ubi_msg(ubi, "attaching mtd%d to ubi%d", mtd->index, ubi_num);
+ ubi_msg(ubi, "attaching mtd%d", mtd->index);

err = io_init(ubi, max_beb_per1024);
if (err)
@@ -1428,7 +1428,7 @@ static int __init ubi_mtd_param_parse(const char *val, struct kernel_param *kp)
}

if (len == 0) {
- pr_err("UBI warning: empty 'mtd=' parameter - ignored\n");
+ pr_warn("UBI warning: empty 'mtd=' parameter - ignored\n");
return 0;
}

diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index 3410ea81..bbef168 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -48,14 +48,13 @@

/**
* get_exclusive - get exclusive access to an UBI volume.
- * @ubi: UBI device description object
* @desc: volume descriptor
*
* This function changes UBI volume open mode to "exclusive". Returns previous
* mode value (positive integer) in case of success and a negative error code
* in case of failure.
*/
-static int get_exclusive(struct ubi_device *ubi, struct ubi_volume_desc *desc)
+static int get_exclusive(struct ubi_volume_desc *desc)
{
int users, err;
struct ubi_volume *vol = desc->vol;
@@ -64,7 +63,7 @@ static int get_exclusive(struct ubi_device *ubi, struct ubi_volume_desc *desc)
users = vol->readers + vol->writers + vol->exclusive;
ubi_assert(users > 0);
if (users > 1) {
- ubi_err(ubi, "%d users for volume %d", users, vol->vol_id);
+ ubi_err(vol->ubi, "%d users for volume %d", users, vol->vol_id);
err = -EBUSY;
} else {
vol->readers = vol->writers = 0;
@@ -421,7 +420,7 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd,
break;
}

- err = get_exclusive(ubi, desc);
+ err = get_exclusive(desc);
if (err < 0)
break;

@@ -457,7 +456,7 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd,
req.bytes < 0 || req.lnum >= vol->usable_leb_size)
break;

- err = get_exclusive(ubi, desc);
+ err = get_exclusive(desc);
if (err < 0)
break;

diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 396aaa5..ed0bcb3 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -1419,8 +1419,7 @@ int ubi_self_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len)

fail:
ubi_err(ubi, "self-check failed for PEB %d", pnum);
- ubi_msg(ubi, "hex dump of the %d-%d region",
- offset, offset + len);
+ ubi_msg(ubi, "hex dump of the %d-%d region", offset, offset + len);
print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, buf, len, 1);
err = -EINVAL;
error:
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
index f80ffab..88c2e9f 100644
--- a/drivers/mtd/ubi/ubi.h
+++ b/drivers/mtd/ubi/ubi.h
@@ -51,13 +51,16 @@

/* Normal UBI messages */
#define ubi_msg(ubi, fmt, ...) pr_notice("UBI-%d: %s:" fmt "\n", \
- ubi->ubi_num, __func__, ##__VA_ARGS__)
+ (ubi ? ubi->ubi_num : UBI_MAX_DEVICES), \
+ __func__, ##__VA_ARGS__)
/* UBI warning messages */
#define ubi_warn(ubi, fmt, ...) pr_warn("UBI-%d warning: %s: " fmt "\n", \
- ubi->ubi_num, __func__, ##__VA_ARGS__)
+ (ubi ? ubi->ubi_num : UBI_MAX_DEVICES), \
+ __func__, ##__VA_ARGS__)
/* UBI error messages */
#define ubi_err(ubi, fmt, ...) pr_err("UBI-%d error: %s: " fmt "\n", \
- ubi->ubi_num, __func__, ##__VA_ARGS__)
+ (ubi ? ubi->ubi_num : UBI_MAX_DEVICES), \
+ __func__, ##__VA_ARGS__)

/* Background thread name pattern */
#define UBI_BGT_NAME_PATTERN "ubi_bgt%dd"
diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c
index f8fc308..68c9c5ea 100644
--- a/drivers/mtd/ubi/vtbl.c
+++ b/drivers/mtd/ubi/vtbl.c
@@ -655,14 +655,13 @@ static int init_volumes(struct ubi_device *ubi,

/**
* check_av - check volume attaching information.
- * @ubi: UBI device description object
* @vol: UBI volume description object
* @av: volume attaching information
*
* This function returns zero if the volume attaching information is consistent
* to the data read from the volume tabla, and %-EINVAL if not.
*/
-static int check_av(const struct ubi_device *ubi, const struct ubi_volume *vol,
+static int check_av(const struct ubi_volume *vol,
const struct ubi_ainf_volume *av)
{
int err;
@@ -690,7 +689,7 @@ static int check_av(const struct ubi_device *ubi, const struct ubi_volume *vol,
return 0;

bad:
- ubi_err(ubi, "bad attaching information, error %d", err);
+ ubi_err(vol->ubi, "bad attaching information, error %d", err);
ubi_dump_av(av);
ubi_dump_vol_info(vol);
return -EINVAL;
@@ -753,7 +752,7 @@ static int check_attaching_info(const struct ubi_device *ubi,
ubi_msg(ubi, "finish volume %d removal", av->vol_id);
ubi_remove_av(ai, av);
} else if (av) {
- err = check_av(ubi, vol, av);
+ err = check_av(vol, av);
if (err)
return err;
}
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 834f6fe..8f7bde6 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -470,11 +470,8 @@ struct ubi_wl_entry *ubi_wl_get_fm_peb(struct ubi_device *ubi, int anchor)
{
struct ubi_wl_entry *e = NULL;

- if (!ubi->free.rb_node || (ubi->free_count - ubi->beb_rsvd_pebs < 1)) {
- ubi_warn(ubi, "Can't get peb for fastmap:anchor=%d, free_cnt=%d, reserved=%d",
- anchor, ubi->free_count, ubi->beb_rsvd_pebs);
+ if (!ubi->free.rb_node || (ubi->free_count - ubi->beb_rsvd_pebs < 1))
goto out;
- }

if (anchor)
e = find_anchor_wl_entry(&ubi->free);
@@ -1806,11 +1803,8 @@ int ubi_thread(void *u)
for (;;) {
int err;

- if (kthread_should_stop()) {
- ubi_msg(ubi, "background thread \"%s\" should stop, PID %d",
- ubi->bgt_name, task_pid_nr(current));
+ if (kthread_should_stop())
break;
- }

if (try_to_freeze())
continue;
--
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a Linux Foundation Collaborative Project