Blackfin arch: fix bug - Turn on DEBUG_DOUBLEFAULT, booting SMP kernel crash

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index c13fa8d..bde6dc4 100644 (file)
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -277,7 +277,7 @@ ENTRY(_bfin_return_from_exception)
        p5.h = hi(ILAT);
        r6 = [p5];
        r7 = 0x20;              /* Did I just cause anther HW error? */
-       r7 = r7 & r1;
+       r6 = r7 & r6;
        CC = R7 == R6;
        if CC JUMP _double_fault;
 #endif