Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] Probe initrd header only if explicitly specified
  [MIPS] TX39xx: Add missing local_flush_icache_range initialization
  [MIPS] TXx9: Fix txx9_pcode initialization
  [MIPS] Fix WARNING: at kernel/smp.c:290
  [MIPS] Fix data bus error recovery

1 files changed, 18 insertions, 15 deletions

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 2aae76bce293..16f8edfe5cdc 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -160,30 +160,33 @@ early_param("rd_size", rd_size_early);
 static unsigned long __init init_initrd(void)
 {
         unsigned long end;
-        u32 *initrd_header;
 
         /*
          * Board specific code or command line parser should have
          * already set up initrd_start and initrd_end. In these cases
          * perfom sanity checks and use them if all looks good.
          */
-        if (initrd_start && initrd_end > initrd_start)
-                goto sanitize;
+        if (!initrd_start || initrd_end <= initrd_start) {
+#ifdef CONFIG_PROBE_INITRD_HEADER
+                u32 *initrd_header;
 
-        /*
-         * See if initrd has been added to the kernel image by
-         * arch/mips/boot/addinitrd.c. In that case a header is
-         * prepended to initrd and is made up by 8 bytes. The fisrt
-         * word is a magic number and the second one is the size of
-         * initrd.  Initrd start must be page aligned in any cases.
-         */
-        initrd_header = __va(PAGE_ALIGN(__pa_symbol(&_end) + 8)) - 8;
-        if (initrd_header[0] != 0x494E5244)
+                /*
+                 * See if initrd has been added to the kernel image by
+                 * arch/mips/boot/addinitrd.c. In that case a header is
+                 * prepended to initrd and is made up by 8 bytes. The first
+                 * word is a magic number and the second one is the size of
+                 * initrd.  Initrd start must be page aligned in any cases.
+                 */
+                initrd_header = __va(PAGE_ALIGN(__pa_symbol(&_end) + 8)) - 8;
+                if (initrd_header[0] != 0x494E5244)
+                        goto disable;
+                initrd_start = (unsigned long)(initrd_header + 2);
+                initrd_end = initrd_start + initrd_header[1];
+#else
                 goto disable;
-        initrd_start = (unsigned long)(initrd_header + 2);
-        initrd_end = initrd_start + initrd_header[1];
+#endif
+        }
 
-sanitize:
         if (initrd_start & ~PAGE_MASK) {
                 pr_err("initrd start must be page aligned\n");
                 goto disable;