grub2/0042-sparc64-Don-t-use-devspec-to-determine-the-OBP-path.patch

From f8679cedff703b437171f4708d46adbfcff80a65 Mon Sep 17 00:00:00 2001
From: Eric Snowberg <eric.snowberg@oracle.com>
Date: Thu, 18 May 2017 17:10:22 -0600
Subject: [PATCH 042/206] sparc64: Don't use devspec to determine the OBP path

Don't use devspec to determine the OBP path on SPARC hardware.  Within all
versions of Linux on SPARC, the devspec returns one of three values:
"none", "vnet-port", or "vdisk".  Unlike on PPC, none of these values
are useful in determining the OBP path.

Before this patch grub-ofpathname always returned the wrong value
for a virtual disk. For example:

% grub-ofpathname /dev/vdiskc2
vdisk/disk@2:b

After this patch it now returns the correct value:

% grub-ofpathname /dev/vdiskc2
/virtual-devices@100/channel-devices@200/disk@2:b

Orabug: 24459765

Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
 grub-core/osdep/linux/ofpath.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/grub-core/osdep/linux/ofpath.c b/grub-core/osdep/linux/ofpath.c
index a79682a5e31..dce4e59d081 100644
--- a/grub-core/osdep/linux/ofpath.c
+++ b/grub-core/osdep/linux/ofpath.c
@@ -120,6 +120,8 @@ find_obppath (const char *sysfs_path_orig)
 #endif
 
       fd = open(path, O_RDONLY);
+
+#ifndef __sparc__
       if (fd < 0 || fstat (fd, &st) < 0)
 	{
 	  if (fd >= 0)
@@ -127,6 +129,7 @@ find_obppath (const char *sysfs_path_orig)
 	  snprintf(path, path_size, "%s/devspec", sysfs_path);
 	  fd = open(path, O_RDONLY);
 	}
+#endif
 
       if (fd < 0 || fstat (fd, &st) < 0)
 	{
-- 
2.15.0