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-rw-r--r--arch/blackfin/kernel/early_printk.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/blackfin/kernel/early_printk.c b/arch/blackfin/kernel/early_printk.c
index 3302719173c..2ab56811841 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();