diff options
author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2008-07-16 16:40:22 +0200 |
---|---|---|
committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2008-07-24 12:34:45 +0200 |
commit | c8566350a3229ca505b84313c65d1403b4d0cbfc (patch) | |
tree | 156309b71de9779948fdab03a2831b41fe6ca159 /drivers/mtd/ubi/vmt.c | |
parent | UBI: amend commentaries (diff) | |
download | linux-c8566350a3229ca505b84313c65d1403b4d0cbfc.tar.xz linux-c8566350a3229ca505b84313c65d1403b4d0cbfc.zip |
UBI: fix and re-work debugging stuff
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers/mtd/ubi/vmt.c')
-rw-r--r-- | drivers/mtd/ubi/vmt.c | 73 |
1 files changed, 37 insertions, 36 deletions
diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c index bfa7c5d2e064..2cd886a5adac 100644 --- a/drivers/mtd/ubi/vmt.c +++ b/drivers/mtd/ubi/vmt.c @@ -28,9 +28,9 @@ #include "ubi.h" #ifdef CONFIG_MTD_UBI_DEBUG_PARANOID -static void paranoid_check_volumes(struct ubi_device *ubi); +static int paranoid_check_volumes(struct ubi_device *ubi); #else -#define paranoid_check_volumes(ubi) +#define paranoid_check_volumes(ubi) 0 #endif static ssize_t vol_attribute_show(struct device *dev, @@ -218,7 +218,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req) spin_lock(&ubi->volumes_lock); if (vol_id == UBI_VOL_NUM_AUTO) { /* Find unused volume ID */ - dbg_msg("search for vacant volume ID"); + dbg_gen("search for vacant volume ID"); for (i = 0; i < ubi->vtbl_slots; i++) if (!ubi->volumes[i]) { vol_id = i; @@ -233,7 +233,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req) req->vol_id = vol_id; } - dbg_msg("volume ID %d, %llu bytes, type %d, name %s", + dbg_gen("volume ID %d, %llu bytes, type %d, name %s", vol_id, (unsigned long long)req->bytes, (int)req->vol_type, req->name); @@ -361,8 +361,8 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req) ubi->vol_count += 1; spin_unlock(&ubi->volumes_lock); - paranoid_check_volumes(ubi); - return 0; + err = paranoid_check_volumes(ubi); + return err; out_sysfs: /* @@ -414,7 +414,7 @@ int ubi_remove_volume(struct ubi_volume_desc *desc) struct ubi_device *ubi = vol->ubi; int i, err, vol_id = vol->vol_id, reserved_pebs = vol->reserved_pebs; - dbg_msg("remove UBI volume %d", vol_id); + dbg_gen("remove UBI volume %d", vol_id); ubi_assert(desc->mode == UBI_EXCLUSIVE); ubi_assert(vol == ubi->volumes[vol_id]); @@ -465,8 +465,8 @@ int ubi_remove_volume(struct ubi_volume_desc *desc) ubi->vol_count -= 1; spin_unlock(&ubi->volumes_lock); - paranoid_check_volumes(ubi); - return 0; + err = paranoid_check_volumes(ubi); + return err; out_err: ubi_err("cannot remove volume %d, error %d", vol_id, err); @@ -497,7 +497,7 @@ int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs) if (ubi->ro_mode) return -EROFS; - dbg_msg("re-size volume %d to from %d to %d PEBs", + dbg_gen("re-size volume %d to from %d to %d PEBs", vol_id, vol->reserved_pebs, reserved_pebs); if (vol->vol_type == UBI_STATIC_VOLUME && @@ -586,8 +586,8 @@ int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs) (long long)vol->used_ebs * vol->usable_leb_size; } - paranoid_check_volumes(ubi); - return 0; + err = paranoid_check_volumes(ubi); + return err; out_acc: if (pebs > 0) { @@ -615,8 +615,7 @@ int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol) int err, vol_id = vol->vol_id; dev_t dev; - dbg_msg("add volume %d", vol_id); - ubi_dbg_dump_vol_info(vol); + dbg_gen("add volume %d", vol_id); /* Register character device for the volume */ cdev_init(&vol->cdev, &ubi_vol_cdev_operations); @@ -650,8 +649,8 @@ int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol) return err; } - paranoid_check_volumes(ubi); - return 0; + err = paranoid_check_volumes(ubi); + return err; out_gluebi: err = ubi_destroy_gluebi(vol); @@ -672,7 +671,7 @@ void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol) { int err; - dbg_msg("free volume %d", vol->vol_id); + dbg_gen("free volume %d", vol->vol_id); ubi->volumes[vol->vol_id] = NULL; err = ubi_destroy_gluebi(vol); @@ -686,8 +685,10 @@ void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol) * paranoid_check_volume - check volume information. * @ubi: UBI device description object * @vol_id: volume ID + * + * Returns zero if volume is all right and a a negative error code if not. */ -static void paranoid_check_volume(struct ubi_device *ubi, int vol_id) +static int paranoid_check_volume(struct ubi_device *ubi, int vol_id) { int idx = vol_id2idx(ubi, vol_id); int reserved_pebs, alignment, data_pad, vol_type, name_len, upd_marker; @@ -705,16 +706,7 @@ static void paranoid_check_volume(struct ubi_device *ubi, int vol_id) goto fail; } spin_unlock(&ubi->volumes_lock); - return; - } - - if (vol->exclusive) { - /* - * The volume may be being created at the moment, do not check - * it (e.g., it may be in the middle of ubi_create_volume(). - */ - spin_unlock(&ubi->volumes_lock); - return; + return 0; } if (vol->reserved_pebs < 0 || vol->alignment < 0 || vol->data_pad < 0 || @@ -830,25 +822,34 @@ static void paranoid_check_volume(struct ubi_device *ubi, int vol_id) } spin_unlock(&ubi->volumes_lock); - return; + return 0; fail: ubi_err("paranoid check failed for volume %d", vol_id); - ubi_dbg_dump_vol_info(vol); - ubi_dbg_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id); + if (vol) { + ubi_dbg_dump_vol_info(vol); + ubi_dbg_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id); + } spin_unlock(&ubi->volumes_lock); - BUG(); + return -EINVAL; } /** * paranoid_check_volumes - check information about all volumes. * @ubi: UBI device description object + * + * Returns zero if volumes are all right and a a negative error code if not. */ -static void paranoid_check_volumes(struct ubi_device *ubi) +static int paranoid_check_volumes(struct ubi_device *ubi) { - int i; + int i, err = 0; - for (i = 0; i < ubi->vtbl_slots; i++) - paranoid_check_volume(ubi, i); + for (i = 0; i < ubi->vtbl_slots; i++) { + err = paranoid_check_volume(ubi, i); + if (err) + break; + } + + return err; } #endif |