From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001
From: James <>
Date: Wed, 4 Nov 2015 11:49:21 +0000
Subject: trunk-47381

---
 .../412-mtd-partial_eraseblock_unlock.patch            | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 target/linux/generic/patches-4.1/412-mtd-partial_eraseblock_unlock.patch

(limited to 'target/linux/generic/patches-4.1/412-mtd-partial_eraseblock_unlock.patch')

diff --git a/target/linux/generic/patches-4.1/412-mtd-partial_eraseblock_unlock.patch b/target/linux/generic/patches-4.1/412-mtd-partial_eraseblock_unlock.patch
new file mode 100644
index 0000000..b7964e2
--- /dev/null
+++ b/target/linux/generic/patches-4.1/412-mtd-partial_eraseblock_unlock.patch
@@ -0,0 +1,18 @@
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -336,7 +336,14 @@ static int part_lock(struct mtd_info *mt
+ static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+ {
+ 	struct mtd_part *part = PART(mtd);
+-	return part->master->_unlock(part->master, ofs + part->offset, len);
++
++	ofs += part->offset;
++	if (mtd->flags & MTD_ERASE_PARTIAL) {
++		/* round up len to next erasesize and round down offset to prev block */
++		len = (mtd_div_by_eb(len, part->master) + 1) * part->master->erasesize;
++		ofs &= ~(part->master->erasesize - 1);
++	}
++	return part->master->_unlock(part->master, ofs, len);
+ }
+ 
+ static int part_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
-- 
cgit v1.2.3