powerpc: Enable Little Endian Alignment Handler for Float Pair Instructions

This patch enables alignment handling for the load/store floating point
pair instructions (lfdp, lfdpx, stfdp, stfdpx).  The handler routine
is properly coded and only needs to be enabled.

Signed-off-by: Tom Musta <tmusta@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index a3169a9..de91f3a 100644 (file)
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -378,7 +378,6 @@ static int emulate_multiple(struct pt_regs *regs, unsigned char __user *addr,
  * Only POWER6 has these instructions, and it does true little-endian,
  * so we don't need the address swizzling.
  */
-#ifdef __BIG_ENDIAN__
 static int emulate_fp_pair(unsigned char __user *addr, unsigned int reg,
                           unsigned int flags)
 {
@@ -406,7 +405,6 @@ static int emulate_fp_pair(unsigned char __user *addr, unsigned int reg,
                return -EFAULT;
        return 1;       /* exception handled and fixed up */
 }
-#endif
 
 #ifdef CONFIG_SPE
 
@@ -918,12 +916,8 @@ int fix_alignment(struct pt_regs *regs)
 
        /* Special case for 16-byte FP loads and stores */
        if (nb == 16) {
-#ifdef __BIG_ENDIAN__
                PPC_WARN_ALIGNMENT(fp_pair, regs);
                return emulate_fp_pair(addr, reg, flags);
-#else
-               return -EFAULT;
-#endif
        }
 
        PPC_WARN_ALIGNMENT(unaligned, regs);