target/linux/generic/backport-6.1/424-v6.3-mtd-ubi-wire-up-parent-MTD-device.patch

   1 From 1ecf9e390452e73a362ea7fbde8f3f0db83de856 Mon Sep 17 00:00:00 2001
   2 From: Daniel Golle <daniel@makrotopia.org>
   3 Date: Thu, 22 Dec 2022 19:33:04 +0000
   4 Subject: [PATCH] mtd: ubi: wire-up parent MTD device
   5
   6 Wire up the device parent pointer of UBI devices to their lower MTD
   7 device, typically an MTD partition or whole-chip device.
   8
   9 The most noticeable change is that in sysfs, previously ubi devices
  10 would be could in /sys/devices/virtual/ubi while after this change they
  11 would be correctly attached to their parent MTD device, e.g.
  12
  13 /sys/devices/platform/1100d000.spi/spi_master/spi1/spi1.0/mtd/mtd2/ubi0.
  14
  15 Locating UBI devices using /sys/class/ubi/ of course still works as
  16 well.
  17
  18 Signed-off-by: Daniel Golle <daniel@makrotopia.org>
  19 Signed-off-by: Richard Weinberger <richard@nod.at>
  20 ---
  21  drivers/mtd/ubi/build.c | 1 +
  22  1 file changed, 1 insertion(+)
  23
  24 --- a/drivers/mtd/ubi/build.c
  25 +++ b/drivers/mtd/ubi/build.c
  26 @@ -929,6 +929,7 @@ int ubi_attach_mtd_dev(struct mtd_info *
  27         ubi->dev.release = dev_release;
  28         ubi->dev.class = &ubi_class;
  29         ubi->dev.groups = ubi_dev_groups;
  30 +       ubi->dev.parent = &mtd->dev;
  31
  32         ubi->mtd = mtd;
  33         ubi->ubi_num = ubi_num;