[S390] incorrect reipl nss name.

/sys/firmware/reipl/nss/name contains the nss name when defsys or
savesys command has been executed. If the defsys or savesys command
fails the kernel_nss_name has to be cleared since a reipl on that
nss name won't be possible.

Signed-off-by: Hongjie Yang <hongjie@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 9f7b73b180f0..01832c440636 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -88,13 +88,17 @@ static noinline __init void create_kernel_nss(void)
 
         __cpcmd(defsys_cmd, NULL, 0, &response);
 
-        if (response != 0)
+        if (response != 0) {
+                kernel_nss_name[0] = '\0';
                 return;
+        }
 
         __cpcmd(savesys_cmd, NULL, 0, &response);
 
-        if (response != strlen(savesys_cmd))
+        if (response != strlen(savesys_cmd)) {
+                kernel_nss_name[0] = '\0';
                 return;
+        }
 
         ipl_flags = IPL_NSS_VALID;
 }