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authorRafał Miłecki <rafal@milecki.pl>2021-03-22 07:38:06 +0100
committerRafał Miłecki <rafal@milecki.pl>2021-03-22 07:44:10 +0100
commit2b4986b9424872ec8962a34ca38c399aae4a53b3 (patch)
tree88eae5580e43c98e708165eb1869eaba7f463578
parent46c0634b508f731df487a7909c439b2794445e26 (diff)
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bcm4908: add MTD support for repartitioning
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>
-rw-r--r--target/linux/bcm4908/patches-5.4/401-mtd-support-BLKRRPART.patch28
1 files changed, 28 insertions, 0 deletions
diff --git a/target/linux/bcm4908/patches-5.4/401-mtd-support-BLKRRPART.patch b/target/linux/bcm4908/patches-5.4/401-mtd-support-BLKRRPART.patch
new file mode 100644
index 0000000000..70a1896328
--- /dev/null
+++ b/target/linux/bcm4908/patches-5.4/401-mtd-support-BLKRRPART.patch
@@ -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;
+ }
+ }