[S390] Use diagnose 308 for system reset
The diagnose 308 call is the prefered method for clearing all ongoing I/O.
Therefore if it is available we use it instead of doing a manual reset.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 059c590..04361d5 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -1996,6 +1996,12 @@
{
struct reset_call *reset;
+#ifdef CONFIG_64BIT
+ if (diag308_set_works) {
+ diag308_reset();
+ return;
+ }
+#endif
list_for_each_entry(reset, &rcall, list)
reset->fn();
}