[Blackfin] arch: Let the pre-processor do the math to save a few cycles - no functional changes

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index 1b25b57c8c0..58f7ad61799 100644
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -633,9 +633,7 @@ ENTRY(_ret_from_exception)
         [sp + PT_IPEND] = r0;
 
 1:
-        r1 = 0x37(Z);
-        r2 = ~r1;
-        r2.h = 0;
+        r2 = LO(~0x37) (Z);
         r0 = r2 & r0;
         cc = r0 == 0;
         if !cc jump 4f; /* if not return to user mode, get out */