Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (27 commits)
  Blackfin: hook up new rt_tgsigqueueinfo syscall
  Blackfin: improve CLKIN_HZ config default
  Blackfin: initial support for ftrace grapher
  Blackfin: initial support for ftrace
  Blackfin: enable support for LOCKDEP
  Blackfin: add preliminary support for STACKTRACE
  Blackfin: move custom sections into sections.h
  Blackfin: punt unused/wrong mutex-dec.h
  Blackfin: add support for irqflags
  Blackfin: add support for bzip2/lzma compressed kernel images
  Blackfin: convert Kconfig style to def_bool
  Blackfin: bf548-ezkit: update smsc911x resources
  Blackfin: update aedos-ipipe code to upstream 1.10-00
  Blackfin: bf537-stamp: update ADP5520 resources
  Blackfin: bf518f-ezbrd: fix SPI CS for SPI flash
  Blackfin: define SPI IRQ in board resources
  Blackfin: do not configure the UART early if on wrong processor
  Blackfin: fix deadlock in SMP IPI handler
  Blackfin: fix flag storage for irq funcs
  Blackfin: push down exception oops checking
  ...

1 files changed, 6 insertions, 2 deletions

diff --git a/arch/blackfin/kernel/early_printk.c b/arch/blackfin/kernel/early_printk.c
index 3302719173ca..2ab56811841c 100644
--- a/arch/blackfin/kernel/early_printk.c
+++ b/arch/blackfin/kernel/early_printk.c
@@ -202,11 +202,15 @@ asmlinkage void __init init_early_exception_vectors(void)
 asmlinkage void __init early_trap_c(struct pt_regs *fp, void *retaddr)
 {
         /* This can happen before the uart is initialized, so initialize
-         * the UART now
+         * the UART now (but only if we are running on the processor we think
+         * we are compiled for - otherwise we write to MMRs that don't exist,
+         * and cause other problems. Nothing comes out the UART, but it does
+         * end up in the __buf_log.
          */
-        if (likely(early_console == NULL))
+        if (likely(early_console == NULL) && CPUID == bfin_cpuid())
                 setup_early_printk(DEFAULT_EARLY_PORT);
 
+        printk(KERN_EMERG "Early panic\n");
         dump_bfin_mem(fp);
         show_regs(fp);
         dump_bfin_trace_buffer();