From 8e2c992b59fcb5e56e3667f5c30c7d26fbbf14a2 Mon Sep 17 00:00:00 2001 From: Michal Suchanek Date: Tue, 18 Aug 2015 15:34:07 +0000 Subject: [PATCH] mtd: mtdpart: add debug prints to partition parser. The probe of a mtd device can fail when a partition parser returns error. The failure due to partition parsing can be quite mysterious when multiple partitioning schemes are compiled in and any of them can fail the probe. Add debug prints which show what parsers were tried and what they returned. Signed-off-by: Michal Suchanek Signed-off-by: Brian Norris --- drivers/mtd/mtdpart.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 919a936abc42..f5279ea6dc87 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -761,12 +761,17 @@ int parse_mtd_partitions(struct mtd_info *master, const char *const *types, types = default_mtd_part_types; for ( ; ret <= 0 && *types; types++) { + pr_debug("%s: parsing partitions %s\n", master->name, *types); parser = get_partition_parser(*types); if (!parser && !request_module("%s", *types)) parser = get_partition_parser(*types); + pr_debug("%s: got parser %s\n", master->name, + parser ? parser->name : NULL); if (!parser) continue; ret = (*parser->parse_fn)(master, pparts, data); + pr_debug("%s: parser %s: %i\n", + master->name, parser->name, ret); put_partition_parser(parser); if (ret > 0) { printk(KERN_NOTICE "%d %s partitions found on MTD device %s\n",