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mtd: move code adding (registering) partitions to the parse_mtd_partitions()

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This commit slightly simplifies the code. Every parse_mtd_partitions()
caller (out of two existing ones) had to add partitions & cleanup parser
on its own. This moves that responsibility into the function.

That change also allows dropping struct mtd_partitions argument.

There is one minor behavior change caused by this cleanup. If
parse_mtd_partitions() fails to add partitions (add_mtd_partitions()
return an error) then mtd_device_parse_register() will still try to
add (register) fallback partitions. It's a real corner case affecting
one of uncommon error paths and shouldn't cause any harm.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
This commit is contained in:
Rafał Miłecki
2018-03-27 22:35:41 +02:00
committed by Boris Brezillon
parent 0fe3ede794
commit 5ac67ce36c
3 changed files with 20 additions and 39 deletions
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14
drivers/mtd/mtdcore.c
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@@ -700,7 +700,6 @@ int mtd_device_parse_register(struct mtd_info *mtd, const char * const *types,
const struct mtd_partition *parts,
int nr_parts)
{
struct mtd_partitions parsed = { };
int ret;
mtd_set_dev_defaults(mtd);
@@ -712,13 +711,10 @@ int mtd_device_parse_register(struct mtd_info *mtd, const char * const *types,
}
/* Prefer parsed partitions over driver-provided fallback */
ret = parse_mtd_partitions(mtd, types, &parsed, parser_data);
if (!ret && parsed.nr_parts) {
parts = parsed.parts;
nr_parts = parsed.nr_parts;
}
if (nr_parts)
ret = parse_mtd_partitions(mtd, types, parser_data);
if (ret > 0)
ret = 0;
else if (nr_parts)
ret = add_mtd_partitions(mtd, parts, nr_parts);
else if (!device_is_registered(&mtd->dev))
ret = add_mtd_device(mtd);
@@ -744,8 +740,6 @@ int mtd_device_parse_register(struct mtd_info *mtd, const char * const *types,
}
out:
/* Cleanup any parsed partitions */
mtd_part_parser_cleanup(&parsed);
if (ret && device_is_registered(&mtd->dev))
del_mtd_device(mtd);