[kernel] Remove /proc/device-tree when openfirmware init fails. (rhbz 818378)

[Dave Jones]

commit 6a501c420a6ae277fef9937926f0fae29d760914
Author: Dave Jones <davej at redhat.com>
Date:   Mon May 7 12:03:03 2012 -0400

    Remove /proc/device-tree when openfirmware init fails. (rhbz 818378)

 fs-proc-devtree-remove_proc_entry.patch |   12 ++++++++++++
 kernel.spec                             |    7 +++++++
 2 files changed, 19 insertions(+), 0 deletions(-)
---
diff --git a/fs-proc-devtree-remove_proc_entry.patch b/fs-proc-devtree-remove_proc_entry.patch
new file mode 100644
index 0000000..c32e79e
--- /dev/null
+++ b/fs-proc-devtree-remove_proc_entry.patch
@@ -0,0 +1,12 @@
+diff --git a/fs/proc/proc_devtree.c b/fs/proc/proc_devtree.c
+index 927cbd1..f060f28 100644
+--- a/fs/proc/proc_devtree.c
++++ b/fs/proc/proc_devtree.c
+@@ -233,6 +233,7 @@ void __init proc_device_tree_init(void)
+ 		return;
+ 	root = of_find_node_by_path("/");
+ 	if (root == NULL) {
++		remove_proc_entry("device-tree", NULL);
+ 		pr_debug("/proc/device-tree: can't find root\n");
+ 		return;
+ 	}
diff --git a/kernel.spec b/kernel.spec
index f3e259f..baea339 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -705,6 +705,8 @@ Patch2901: linux-2.6-v4l-dvb-experimental.patch
 # NFSv4
 
 # patches headed upstream
+Patch10000: fs-proc-devtree-remove_proc_entry.patch
+
 Patch12016: disable-i8042-check-on-apple-mac.patch
 
 Patch12303: dmar-disable-when-ricoh-multifunction.patch
@@ -1414,6 +1416,8 @@ ApplyOptionalPatch linux-2.6-v4l-dvb-update.patch
 ApplyOptionalPatch linux-2.6-v4l-dvb-experimental.patch
 
 # Patches headed upstream
+ApplyPatch fs-proc-devtree-remove_proc_entry.patch
+
 ApplyPatch disable-i8042-check-on-apple-mac.patch
 
 # rhbz#605888
@@ -2325,6 +2329,9 @@ fi
 #                 ||----w |
 #                 ||     ||
 %changelog
+* Mon May 07 2012 Dave Jones <davej at redhat.com>
+- Remove /proc/device-tree when openfirmware init fails. (rhbz 818378)
+
 * Mon May 07 2012 Josh Boyer <jwboyer at redhat.com> - 3.4.0-0.rc6.git0.1
 - Linux v3.4-rc6
 - Disable debugging options.