ARM: entry: abort-macro: simplify do_ldrd_abort

We can test bits 27:25 and 20 of the instruction at the same time;
there's no need to separate out the check of bit 20.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mm/abort-macro.S b/arch/arm/mm/abort-macro.S
index 8d3b9f9..af97a10 100644 (file)
--- a/arch/arm/mm/abort-macro.S
+++ b/arch/arm/mm/abort-macro.S
@@ -30,12 +30,10 @@ not_thumb:
  *    [20] == 0
  */
        .macro  do_ldrd_abort, tmp, insn
-       tst     \insn, #0x0e000000              @ [27:25] == 0
+       tst     \insn, #0x0e100000              @ [27:25,20] == 0
        bne     not_ldrd
        and     \tmp, \insn, #0x000000f0        @ [7:4] == 1101
        cmp     \tmp, #0x000000d0
-       bne     not_ldrd
-       tst     \insn, #1 << 20                 @ [20] == 0
        moveq   pc, lr
 not_ldrd:
        .endm