cmd: ubi: Add additional message upon UBI attach error

When trying to attach an UBI MTD partition via "ubi part", it may happen that the MTD partition defined in U-Boot (via mtdparts) is not big enough than the one, where the UBI device has been created on. This may lead to errors, which are not really descriptive to debug and solve this issue, like:

ubi0 error: vtbl_check: too large reserved_pebs 1982, good PEBs 1020 ubi0 error: vtbl_check: volume table check failed: record 0, error 9

or:

ubi0 error: init_volumes: not enough PEBs, required 1738, available 1020 ubi0 error: ubi_wl_init: no enough physical eraseblocks (-718, need 1) ubi0 error: ubi_attach_mtd_dev: failed to attach mtd1, error -12

Lets add an additional message upon attach failure, to aid the U-Boot user to solve this problem.

---
 cmd/ubi.c | 1 +
 1 file changed, 1 insertion(+)

index ac9a582437..3fd6dbf07f 100644
@@ -510,6 +510,7 @@ int ubi_part(char *part_name, const char *vid_header_offset)
 			vid_header_offset);
 	if (err) {
 		printf("UBI init error %d\n", err);
+		printf("Please check, if the correct MTD partition is used (size big enough?)\n");
 		ubi_dev.selected = 0;
 		return err;
 	}

2.18.0

Hello Stefan,

Am 26.06.2018 um 08:12 schrieb Stefan Roese:

applied to u-boot-ubi.git master

Thanks!

bye,
Heiko

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