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-rw-r--r--drivers/s390/cio/chsc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 1ecd3e567648..4038f5b4f144 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -574,7 +574,7 @@ int __chsc_do_secm(struct channel_subsystem *css, int enable, void *page)
secm_area->request.length = 0x0050;
secm_area->request.code = 0x0016;
- secm_area->key = PAGE_DEFAULT_KEY;
+ secm_area->key = PAGE_DEFAULT_KEY >> 4;
secm_area->cub_addr1 = (u64)(unsigned long)css->cub_addr1;
secm_area->cub_addr2 = (u64)(unsigned long)css->cub_addr2;