kernel: backport upstream mtdpart.c cleanups

[openwrt/openwrt.git] / target / linux / generic / patches-4.9 / 065-v4.13-0004-mtd-partitions-remove-sysfs-files-when-deleting-all-.patch

diff --git a/target/linux/generic/patches-4.9/065-v4.13-0004-mtd-partitions-remove-sysfs-files-when-deleting-all-.patch b/target/linux/generic/patches-4.9/065-v4.13-0004-mtd-partitions-remove-sysfs-files-when-deleting-all-.patch
new file mode 100644 (file)
index 0000000..0f1b502
--- /dev/null
+++ b/target/linux/generic/patches-4.9/065-v4.13-0004-mtd-partitions-remove-sysfs-files-when-deleting-all-.patch
@@ -0,0 +1,45 @@
+From c5ceaba74083daf619bdb34d4871e297a177eebf Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Wed, 21 Jun 2017 08:26:43 +0200
+Subject: [PATCH] mtd: partitions: remove sysfs files when deleting all
+ master's partitions
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+When support for sysfs "offset" file was added it missed to update the
+del_mtd_partitions function. It deletes partitions just like
+mtd_del_partition does so both should also take care of removing sysfs
+files.
+
+This change moves sysfs_remove_files call to the shared function to fix
+this issue.
+
+Fixes: a62c24d755291 ("mtd: part: Add sysfs variable for offset of partition")
+Cc: Dan Ehrenberg <dehrenberg@chromium.org>
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: Brian Norris <computersforpeace@gmail.com>
+---
+ drivers/mtd/mtdpart.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -660,6 +660,8 @@ static int __mtd_del_partition(struct mt
+ {
+       int err;
+ 
++      sysfs_remove_files(&priv->mtd.dev.kobj, mtd_partition_attrs);
++
+       err = del_mtd_device(&priv->mtd);
+       if (err)
+               return err;
+@@ -700,8 +702,6 @@ int mtd_del_partition(struct mtd_info *m
+       list_for_each_entry_safe(slave, next, &mtd_partitions, list)
+               if ((slave->master == master) &&
+                   (slave->mtd.index == partno)) {
+-                      sysfs_remove_files(&slave->mtd.dev.kobj,
+-                                         mtd_partition_attrs);
+                       ret = __mtd_del_partition(slave);
+                       break;
+               }