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>

diff --git a/grub-core/osdep/linux/ofpath.c b/grub-core/osdep/linux/ofpath.c
index a79682a..dce4e59 100644 (file)
--- 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)
        {