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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 <hramrach@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Michal Suchanek 2015-08-18 15:34:07 +00:00 committed by Brian Norris
parent eb042ec359
commit 8e2c992b59
1 changed files with 5 additions and 0 deletions
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5
drivers/mtd/mtdpart.c
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@ -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",