[S390] Use diag instead of ccw reipl.

Since the diag 308 reipl method is superior to the ccw method, we should
use it whenever it is possible. We can do that, if the user has not
specified a new reipl ccw device and the system has been ipled from
a ccw device.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 60ba1454bfe1..ec127826f221 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -664,6 +664,8 @@ void do_reipl(void)
         switch (reipl_method) {
         case IPL_METHOD_CCW_CIO:
                 devid.devno = reipl_block_ccw->ipl_info.ccw.devno;
+                if (ipl_get_type() == IPL_TYPE_CCW && devid.devno == ipl_devno)
+                        diag308(DIAG308_IPL, NULL);
                 devid.ssid  = 0;
                 reipl_ccw_dev(&devid);
                 break;