Blackfin: make hardware trace output a little more useful

Decode the vast majority of insns that appear in the trace buffer to get a
better idea of what's going on at a glance.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 4 insertions, 11 deletions

diff --git a/arch/blackfin/kernel/dumpstack.c b/arch/blackfin/kernel/dumpstack.c
index e81392c9d1db..5cfbaa298211 100644
--- a/arch/blackfin/kernel/dumpstack.c
+++ b/arch/blackfin/kernel/dumpstack.c
@@ -18,21 +18,14 @@
  */
 static bool is_bfin_call(unsigned short *addr)
 {
-        unsigned short opcode = 0, *ins_addr;
-        ins_addr = (unsigned short *)addr;
+        unsigned int opcode;
 
-        if (!get_instruction(&opcode, ins_addr))
+        if (!get_instruction(&opcode, addr))
                 return false;
 
         if ((opcode >= 0x0060 && opcode <= 0x0067) ||
-            (opcode >= 0x0070 && opcode <= 0x0077))
-                return true;
-
-        ins_addr--;
-        if (!get_instruction(&opcode, ins_addr))
-                return false;
-
-        if (opcode >= 0xE300 && opcode <= 0xE3FF)
+            (opcode >= 0x0070 && opcode <= 0x0077) ||
+            (opcode >= 0xE3000000 && opcode <= 0xE3FFFFFF))
                 return true;
 
         return false;