diff options
| -rw-r--r-- | drivers/mtd/ubi/debug.h | 6 | ||||
| -rw-r--r-- | drivers/mtd/ubi/io.c | 17 | ||||
| -rw-r--r-- | drivers/mtd/ubi/wl.c | 8 |
3 files changed, 21 insertions, 10 deletions
diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h index 13777e5beac..6fc7fda2ab9 100644 --- a/drivers/mtd/ubi/debug.h +++ b/drivers/mtd/ubi/debug.h @@ -93,6 +93,12 @@ void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req); #define UBI_IO_DEBUG 0 #endif +#ifdef CONFIG_MTD_UBI_DEBUG_PARANOID +int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len); +#else +#define ubi_dbg_check_all_ff(ubi, pnum, offset, len) 0 +#endif + #ifdef CONFIG_MTD_UBI_DEBUG_DISABLE_BGT #define DBG_DISABLE_BGT 1 #else diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c index effaff28bab..6c5441e8791 100644 --- a/drivers/mtd/ubi/io.c +++ b/drivers/mtd/ubi/io.c @@ -98,8 +98,6 @@ static int paranoid_check_ec_hdr(const struct ubi_device *ubi, int pnum, static int paranoid_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum); static int paranoid_check_vid_hdr(const struct ubi_device *ubi, int pnum, const struct ubi_vid_hdr *vid_hdr); -static int paranoid_check_all_ff(struct ubi_device *ubi, int pnum, int offset, - int len); static int paranoid_check_empty(struct ubi_device *ubi, int pnum); #else #define paranoid_check_not_bad(ubi, pnum) 0 @@ -107,7 +105,6 @@ static int paranoid_check_empty(struct ubi_device *ubi, int pnum); #define paranoid_check_ec_hdr(ubi, pnum, ec_hdr) 0 #define paranoid_check_peb_vid_hdr(ubi, pnum) 0 #define paranoid_check_vid_hdr(ubi, pnum, vid_hdr) 0 -#define paranoid_check_all_ff(ubi, pnum, offset, len) 0 #define paranoid_check_empty(ubi, pnum) 0 #endif @@ -244,7 +241,7 @@ int ubi_io_write(struct ubi_device *ubi, const void *buf, int pnum, int offset, return err > 0 ? -EINVAL : err; /* The area we are writing to has to contain all 0xFF bytes */ - err = paranoid_check_all_ff(ubi, pnum, offset, len); + err = ubi_dbg_check_all_ff(ubi, pnum, offset, len); if (err) return err > 0 ? -EINVAL : err; @@ -350,7 +347,7 @@ retry: return -EIO; } - err = paranoid_check_all_ff(ubi, pnum, 0, ubi->peb_size); + err = ubi_dbg_check_all_ff(ubi, pnum, 0, ubi->peb_size); if (err) return err > 0 ? -EINVAL : err; @@ -672,8 +669,7 @@ int ubi_io_read_ec_hdr(struct ubi_device *ubi, int pnum, if (read_err != -EBADMSG && check_pattern(ec_hdr, 0xFF, UBI_EC_HDR_SIZE)) { /* The physical eraseblock is supposedly empty */ - err = paranoid_check_all_ff(ubi, pnum, 0, - ubi->peb_size); + err = ubi_dbg_check_all_ff(ubi, pnum, 0, ubi->peb_size); if (err) return err > 0 ? UBI_IO_BAD_EC_HDR : err; @@ -1229,7 +1225,7 @@ exit: } /** - * paranoid_check_all_ff - check that a region of flash is empty. + * ubi_dbg_check_all_ff - check that a region of flash is empty. * @ubi: UBI device description object * @pnum: the physical eraseblock number to check * @offset: the starting offset within the physical eraseblock to check @@ -1239,13 +1235,14 @@ exit: * @offset of the physical eraseblock @pnum, %1 if not, and a negative error * code if an error occurred. */ -static int paranoid_check_all_ff(struct ubi_device *ubi, int pnum, int offset, - int len) +int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len) { size_t read; int err; loff_t addr = (loff_t)pnum * ubi->peb_size + offset; + ubi_assert(!mutex_is_locked(&ubi->dbg_buf_mutex)); + mutex_lock(&ubi->dbg_buf_mutex); err = ubi->mtd->read(ubi->mtd, addr, len, &read, ubi->dbg_peb_buf); if (err && err != -EUCLEAN) { diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index 2b247230061..e4be446e05e 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -459,6 +459,14 @@ retry: dbg_wl("PEB %d EC %d", e->pnum, e->ec); prot_queue_add(ubi, e); spin_unlock(&ubi->wl_lock); + + err = ubi_dbg_check_all_ff(ubi, e->pnum, ubi->vid_hdr_aloffset, + ubi->peb_size - ubi->vid_hdr_aloffset); + if (err) { + dbg_err("new PEB does not contain all 0xFF bytes"); + return err > 0 ? -EINVAL : err; + } + return e->pnum; } |