From 4a5594fa20d0fa6479f477d2bd67967aca201c2f Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Sun, 2 Dec 2018 10:54:30 +0100 Subject: mtd: Don't stop MTD partition creation when it fails on one device MTD partition creation code is a bit tricky. It tries to figure out when things have changed (either MTD dev list or mtdparts/mtdids vars) and when that happens it first deletes all the partitions that had been previously created and then creates the new ones based on the new mtdparts/mtdids values. But before deleting the old partitions, it ensures that none of the currently registered parts are being used and bails out when that's not the case. So, we end up in a situation where, if at least one MTD dev has one of its partitions used by someone (UBI for instance), the partitions update logic no longer works for other devs. Rework the code to relax the logic and allow updates of MTD parts on devices that are not being used (we still refuse to updates parts on devices who have at least one of their partitions used by someone). Fixes: 5db66b3aee6f ("cmd: mtd: add 'mtd' command") Signed-off-by: Boris Brezillon Tested-by: Heiko Schocher --- include/linux/mtd/mtd.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/mtd') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 4d0096d9f1..cd1f557a2f 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -366,6 +366,8 @@ static inline bool mtd_has_partitions(const struct mtd_info *mtd) return !list_empty(&mtd->partitions); } +bool mtd_partitions_used(struct mtd_info *master); + int mtd_ooblayout_ecc(struct mtd_info *mtd, int section, struct mtd_oob_region *oobecc); int mtd_ooblayout_find_eccregion(struct mtd_info *mtd, int eccbyte, -- cgit