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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-12 01:39:34 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-12 01:39:34 +0200 |
| commit | 77cb51e65df0010cb22169bcbb6ea1b4f21da7e0 (patch) | |
| tree | 0ed38a1edb87fb612e86331e9f93b0b4413001f3 /drivers/mtd | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml (diff) | |
| parent | ubi: Reject MLC NAND (diff) | |
| download | linux-77cb51e65df0010cb22169bcbb6ea1b4f21da7e0.tar.xz linux-77cb51e65df0010cb22169bcbb6ea1b4f21da7e0.zip | |
Merge tag 'tags/upstream-4.17-rc1' of git://git.infradead.org/linux-ubifs
Pull UBI and UBIFS updates from Richard Weinberger:
"Minor bug fixes and improvements"
* tag 'tags/upstream-4.17-rc1' of git://git.infradead.org/linux-ubifs:
ubi: Reject MLC NAND
ubifs: Remove useless parameter of lpt_heap_replace
ubifs: Constify struct ubifs_lprops in scan_for_leb_for_idx
ubifs: remove unnecessary assignment
ubi: Fix error for write access
ubi: fastmap: Don't flush fastmap work on detach
ubifs: Check ubifs_wbuf_sync() return code
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/ubi/block.c | 2 | ||||
| -rw-r--r-- | drivers/mtd/ubi/build.c | 11 | ||||
| -rw-r--r-- | drivers/mtd/ubi/fastmap-wl.c | 1 |
3 files changed, 12 insertions, 2 deletions
diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c index b1fc28f63882..d0b63bbf46a7 100644 --- a/drivers/mtd/ubi/block.c +++ b/drivers/mtd/ubi/block.c @@ -244,7 +244,7 @@ static int ubiblock_open(struct block_device *bdev, fmode_t mode) * in any case. */ if (mode & FMODE_WRITE) { - ret = -EPERM; + ret = -EROFS; goto out_unlock; } diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index e941395de3ae..753494e042d5 100644 --- a/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c @@ -854,6 +854,17 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, return -EINVAL; } + /* + * Both UBI and UBIFS have been designed for SLC NAND and NOR flashes. + * MLC NAND is different and needs special care, otherwise UBI or UBIFS + * will die soon and you will lose all your data. + */ + if (mtd->type == MTD_MLCNANDFLASH) { + pr_err("ubi: refuse attaching mtd%d - MLC NAND is not supported\n", + mtd->index); + return -EINVAL; + } + if (ubi_num == UBI_DEV_NUM_AUTO) { /* Search for an empty slot in the @ubi_devices array */ for (ubi_num = 0; ubi_num < UBI_MAX_DEVICES; ubi_num++) diff --git a/drivers/mtd/ubi/fastmap-wl.c b/drivers/mtd/ubi/fastmap-wl.c index 590d967011bb..98f7d6be8d1f 100644 --- a/drivers/mtd/ubi/fastmap-wl.c +++ b/drivers/mtd/ubi/fastmap-wl.c @@ -362,7 +362,6 @@ static void ubi_fastmap_close(struct ubi_device *ubi) { int i; - flush_work(&ubi->fm_work); return_unused_pool_pebs(ubi, &ubi->fm_pool); return_unused_pool_pebs(ubi, &ubi->fm_wl_pool); |