util-linux: fix PKNAME name is NULL when use lsblk [LIN1019-2963]

PKNAME is NULL when run "lsblk -o+PKNAME /dev/sda1"
backport an upstream patch to fix it.

(From OE-Core rev: dba4cc01463c2edad29f6f8c854b298255cc7562)

Signed-off-by: Liwei Song <liwei.song@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit a5a987ff5e5e333e28be44a12e729907272ea3cb)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/util-linux/util-linux/0001-lsblk-force-to-print-PKNAME-for-partition.patch

@@ -0,0 +1,36 @@
+From e3bb9bfb76c17b1d05814436ced62c05c4011f48 Mon Sep 17 00:00:00 2001
+From: Karel Zak <kzak@redhat.com>
+Date: Thu, 27 Jun 2019 09:22:18 +0200
+Subject: [PATCH] lsblk: force to print PKNAME for partition
+
+PKNAME (parent kernel device name) is based on printed tree according
+to parent -> child relationship. The tree is optional and not printed
+if partition specified (.e.g "lsblk -o+PKNAME /dev/sda1"), but old
+versions print the PKNAME also in this case.
+
+Upstream-Status: Backport [https://github.com/karelzak/util-linux/commit/e3bb9bfb76c17b1d05814436ced62c05c4011f48]
+
+Addresses: https://github.com/karelzak/util-linux/issues/813
+Signed-off-by: Karel Zak <kzak@redhat.com>
+Signed-off-by: Liwei Song <liwei.song@windriver.com>
+---
+ misc-utils/lsblk.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/misc-utils/lsblk.c b/misc-utils/lsblk.c
+index e95af7af0256..3ce6da730264 100644
+--- a/misc-utils/lsblk.c
++++ b/misc-utils/lsblk.c
+@@ -1019,6 +1019,9 @@ static void device_to_scols(
+ 	DBG(DEV, ul_debugobj(dev, "add '%s' to scols", dev->name));
+ 	ON_DBG(DEV, if (ul_path_isopen_dirfd(dev->sysfs)) ul_debugobj(dev, " %s ---> is open!", dev->name));
+ 
++	if (!parent && dev->wholedisk)
++		parent = dev->wholedisk;
++
+ 	/* Do not print device more than one in --list mode */
+ 	if (!(lsblk->flags & LSBLK_TREE) && dev->is_printed)
+ 		return;
+-- 
+2.17.1
+

meta/recipes-core/util-linux/util-linux_2.34.bb

@@ -7,6 +7,7 @@ SRC_URI += "file://configure-sbindir.patch \
             file://run-ptest \
             file://display_testname_for_subtest.patch \
             file://avoid_parallel_tests.patch \
+            file://0001-lsblk-force-to-print-PKNAME-for-partition.patch \
 "
 SRC_URI[md5sum] = "a78cbeaed9c39094b96a48ba8f891d50"
 SRC_URI[sha256sum] = "743f9d0c7252b6db246b659c1e1ce0bd45d8d4508b4dfa427bbb4a3e9b9f62b5"