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8651f1149d
These 2 patches were recently queued for 4.17. Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
75 lines
2.2 KiB
Diff
75 lines
2.2 KiB
Diff
From 2c77c57d22adb05b21cdb333a0c42bdfa0e19835 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
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Date: Tue, 16 Jan 2018 16:45:41 +0100
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Subject: [PATCH] mtd: move code adding master MTD out of
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mtd_add_device_partitions()
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This change is a small cleanup of mtd_device_parse_register(). When
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using MTD_PARTITIONED_MASTER it makes sure a master MTD is registered
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before dealing with partitions. The advantage of this is not mixing
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code handling master MTD with code handling partitions.
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This commit doesn't change any behavior except from a slightly different
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failure code path. The new code may need to call del_mtd_device when
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something goes wrong.
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
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---
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drivers/mtd/mtdcore.c | 25 +++++++++++++------------
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1 file changed, 13 insertions(+), 12 deletions(-)
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--- a/drivers/mtd/mtdcore.c
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+++ b/drivers/mtd/mtdcore.c
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@@ -641,20 +641,12 @@ static int mtd_add_device_partitions(str
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{
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const struct mtd_partition *real_parts = parts->parts;
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int nbparts = parts->nr_parts;
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- int ret;
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- if (nbparts == 0 || IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER)) {
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- ret = add_mtd_device(mtd);
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- if (ret)
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- return ret;
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- }
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+ if (!nbparts && !device_is_registered(&mtd->dev))
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+ return add_mtd_device(mtd);
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- if (nbparts > 0) {
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- ret = add_mtd_partitions(mtd, real_parts, nbparts);
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- if (ret && IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER))
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- del_mtd_device(mtd);
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- return ret;
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- }
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+ if (nbparts > 0)
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+ return add_mtd_partitions(mtd, real_parts, nbparts);
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return 0;
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}
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@@ -714,6 +706,12 @@ int mtd_device_parse_register(struct mtd
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mtd_set_dev_defaults(mtd);
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+ if (IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER)) {
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+ ret = add_mtd_device(mtd);
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+ if (ret)
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+ return ret;
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+ }
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+
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memset(&parsed, 0, sizeof(parsed));
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ret = parse_mtd_partitions(mtd, types, &parsed, parser_data);
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@@ -753,6 +751,9 @@ int mtd_device_parse_register(struct mtd
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out:
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/* Cleanup any parsed partitions */
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mtd_part_parser_cleanup(&parsed);
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+ if (ret && device_is_registered(&mtd->dev))
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+ del_mtd_device(mtd);
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+
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return ret;
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}
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EXPORT_SYMBOL_GPL(mtd_device_parse_register);
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