Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

Pull arch/tile fix from Chris Metcalf:
 "This change allows newer Tilera boot tools to work correctly with
  current (and stable) kernels by using the right filename to get the
  initramfs from the Tilera hypervisor filesystem."

* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  tile: expect new initramfs name from hypervisor file system

1 files changed, 12 insertions, 13 deletions

diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c
index d1e15f7b59c6..7a5aa1a7864e 100644
--- a/arch/tile/kernel/setup.c
+++ b/arch/tile/kernel/setup.c
@@ -1004,15 +1004,8 @@ void __cpuinit setup_cpu(int boot)
 
 #ifdef CONFIG_BLK_DEV_INITRD
 
-/*
- * Note that the kernel can potentially support other compression
- * techniques than gz, though we don't do so by default.  If we ever
- * decide to do so we can either look for other filename extensions,
- * or just allow a file with this name to be compressed with an
- * arbitrary compressor (somewhat counterintuitively).
- */
 static int __initdata set_initramfs_file;
-static char __initdata initramfs_file[128] = "initramfs.cpio.gz";
+static char __initdata initramfs_file[128] = "initramfs";
 
 static int __init setup_initramfs_file(char *str)
 {
@@ -1026,9 +1019,9 @@ static int __init setup_initramfs_file(char *str)
 early_param("initramfs_file", setup_initramfs_file);
 
 /*
- * We look for an "initramfs.cpio.gz" file in the hvfs.
- * If there is one, we allocate some memory for it and it will be
- * unpacked to the initramfs.
+ * We look for a file called "initramfs" in the hvfs.  If there is one, we
+ * allocate some memory for it and it will be unpacked to the initramfs.
+ * If it's compressed, the initd code will uncompress it first.
  */
 static void __init load_hv_initrd(void)
 {
@@ -1038,10 +1031,16 @@ static void __init load_hv_initrd(void)
 
         fd = hv_fs_findfile((HV_VirtAddr) initramfs_file);
         if (fd == HV_ENOENT) {
-                if (set_initramfs_file)
+                if (set_initramfs_file) {
                         pr_warning("No such hvfs initramfs file '%s'\n",
                                    initramfs_file);
-                return;
+                        return;
+                } else {
+                        /* Try old backwards-compatible name. */
+                        fd = hv_fs_findfile((HV_VirtAddr)"initramfs.cpio.gz");
+                        if (fd == HV_ENOENT)
+                                return;
+                }
         }
         BUG_ON(fd < 0);
         stat = hv_fs_fstat(fd);