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bcm4908: add MTD support for repartitioning

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It's required for sysupgrade which requires:
1. Flashing new firmware
2. Finding updated bootfs partition
3. Updating bootfs content

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki 2021-03-22 07:38:06 +01:00
parent 46c0634b50
commit 2b4986b942
1 changed files with 28 additions and 0 deletions
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28
target/linux/bcm4908/patches-5.4/401-mtd-support-BLKRRPART.patch Normal file
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@ -0,0 +1,28 @@
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Mon, 22 Mar 2021 07:15:17 +0100
Subject: [PATCH] mtd: support BLKRRPART
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Rescan MTD subpartitions on request.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -1015,8 +1015,11 @@ static int mtdchar_ioctl(struct file *fi
case BLKRRPART:
{
- /* No reread partition feature. Just return ok */
- ret = 0;
+ int nr_parts;
+
+ del_mtd_partitions(mtd);
+ nr_parts = parse_mtd_partitions(mtd, NULL, NULL);
+ ret = nr_parts < 0 ? nr_parts : 0;
break;
}
}