s390: fix restore of invalid floating-point-control

The fixup of the inline assembly to restore the floating-point-control
register needs to check for instruction address *after* the lfcp
instruction as the specification and data exceptions are suppresssing.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/arch/s390/include/asm/switch_to.h b/arch/s390/include/asm/switch_to.h
index df38c70cd59ef295328068e432fa55b04e03651f..18ea9e3f8142954926b8fea3afe79ce90193a4b3 100644 (file)
--- a/arch/s390/include/asm/switch_to.h
+++ b/arch/s390/include/asm/switch_to.h
@@ -51,8 +51,8 @@ static inline int restore_fp_ctl(u32 *fpc)
                return 0;
 
        asm volatile(
-               "0:     lfpc    %1\n"
-               "       la      %0,0\n"
+               "       lfpc    %1\n"
+               "0:     la      %0,0\n"
                "1:\n"
                EX_TABLE(0b,1b)
                : "=d" (rc) : "Q" (*fpc), "0" (-EINVAL));