[PATCH] UBI: return ENOSPC if no enough space available

[David Gstir]

> On 28.09.2015, at 19:57, Sheng Yong <shengyong1 at huawei.com> wrote:
> 
> UBI: attaching mtd1 to ubi0
> UBI: scanning is finished
> UBI error: init_volumes: not enough PEBs, required 706, available 686
> UBI error: ubi_wl_init: no enough physical eraseblocks (-20, need 1)
> UBI error: ubi_attach_mtd_dev: failed to attach mtd1, error -12 <= NOT ENOMEM
> UBI error: ubi_init: cannot attach mtd1
> 
> If available PEBs are not enough when initializing volumes, return -ENOSPC
> directly. If available PEBs are not enough when initializing WL, return
> -ENOSPC instead of -ENOMEM.
> 
> Signed-off-by: Sheng Yong <shengyong1 at huawei.com>
> ---
> drivers/mtd/ubi/vtbl.c | 1 +
> drivers/mtd/ubi/wl.c   | 1 +
> 2 files changed, 2 insertions(+)
> 
> diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c
> index 80bdd5b..d85c197 100644
> --- a/drivers/mtd/ubi/vtbl.c
> +++ b/drivers/mtd/ubi/vtbl.c
> @@ -649,6 +649,7 @@ static int init_volumes(struct ubi_device *ubi,
> 		if (ubi->corr_peb_count)
> 			ubi_err(ubi, "%d PEBs are corrupted and not used",
> 				ubi->corr_peb_count);
> +		return -ENOSPC;
> 	}
> 	ubi->rsvd_pebs += reserved_pebs;
> 	ubi->avail_pebs -= reserved_pebs;
> diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
> index 275d9fb..eb4489f9 100644
> --- a/drivers/mtd/ubi/wl.c
> +++ b/drivers/mtd/ubi/wl.c
> @@ -1601,6 +1601,7 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
> 		if (ubi->corr_peb_count)
> 			ubi_err(ubi, "%d PEBs are corrupted and not used",
> 				ubi->corr_peb_count);
> +		err = -ENOSPC;
> 		goto out_free;
> 	}
> 	ubi->avail_pebs -= reserved_pebs;
> -- 
> 1.9.1

Looks fine to me.

Reviewed-by: David Gstir <david at sigma-star.at>