diff mbox

[1/3] mtd: mtdpart: add debug prints to partition parser.

Message ID a642dbbeed33b678daa6f8bc4642b92b596a8a73.1438028045.git.hramrach@gmail.com
State Superseded
Headers show

Commit Message

Michal Suchanek July 27, 2015, 8:30 p.m. UTC 
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 comiled 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>
---
 drivers/mtd/mtdpart.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox

Patch

diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index cafdb88..a79c4f7 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -759,12 +759,16 @@  int parse_mtd_partitions(struct mtd_info *master, const char *const *types,
 		types = default_mtd_part_types;
 
 	for ( ; ret <= 0 && *types; types++) {
+		pr_debug("Parsing partitions %s on %s", *types, master->name);
 		parser = get_partition_parser(*types);
 		if (!parser && !request_module("%s", *types))
 			parser = get_partition_parser(*types);
+		pr_debug("%s got parser %s", master->name,
+			 parser ? parser->name : NULL);
 		if (!parser)
 			continue;
 		ret = (*parser->parse_fn)(master, pparts, data);
+		pr_debug("%s parser %s: %i", master->name, parser->name, ret);
 		put_partition_parser(parser);
 		if (ret > 0) {
 			printk(KERN_NOTICE "%d %s partitions found on MTD device %s\n",