powerpc: Remove hard coded FP offsets in alignment handler

The alignment handler assumes big endian ordering when selecting
the low word of a 64bit floating point value. Use the existing
union which works in both little and big endian.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index af830df..25d8d8b 100644 (file)
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -895,7 +895,7 @@ int fix_alignment(struct pt_regs *regs)
 #ifdef CONFIG_PPC_FPU
                        preempt_disable();
                        enable_kernel_fp();
-                       cvt_df(&data.dd, (float *)&data.v[4]);
+                       cvt_df(&data.dd, (float *)&data.x32.low32);
                        preempt_enable();
 #else
                        return 0;
@@ -935,7 +935,7 @@ int fix_alignment(struct pt_regs *regs)
 #ifdef CONFIG_PPC_FPU
                preempt_disable();
                enable_kernel_fp();
-               cvt_fd((float *)&data.v[4], &data.dd);
+               cvt_fd((float *)&data.x32.low32, &data.dd);
                preempt_enable();
 #else
                return 0;