s390/time: remove ETR support

The External-Time-Reference (ETR) clock synchronization interface has
been superseded by Server-Time-Protocol (STP). Remove the outdated
ETR interface.

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

1 files changed, 2 insertions, 11 deletions

diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c
index 07302ce37648..29376f0e725c 100644
--- a/arch/s390/kernel/nmi.c
+++ b/arch/s390/kernel/nmi.c
@@ -16,7 +16,7 @@
 #include <linux/module.h>
 #include <asm/lowcore.h>
 #include <asm/smp.h>
-#include <asm/etr.h>
+#include <asm/stp.h>
 #include <asm/cputime.h>
 #include <asm/nmi.h>
 #include <asm/crw.h>
@@ -27,7 +27,6 @@ struct mcck_struct {
         unsigned int kill_task : 1;
         unsigned int channel_report : 1;
         unsigned int warning : 1;
-        unsigned int etr_queue : 1;
         unsigned int stp_queue : 1;
         unsigned long mcck_code;
 };
@@ -82,8 +81,6 @@ void s390_handle_mcck(void)
                 if (xchg(&mchchk_wng_posted, 1) == 0)
                         kill_cad_pid(SIGPWR, 1);
         }
-        if (mcck.etr_queue)
-                etr_queue_work();
         if (mcck.stp_queue)
                 stp_queue_work();
         if (mcck.kill_task) {
@@ -241,8 +238,6 @@ static int notrace s390_validate_registers(union mci mci)
 
 #define ED_STP_ISLAND   6       /* External damage STP island check */
 #define ED_STP_SYNC     7       /* External damage STP sync check */
-#define ED_ETR_SYNC     12      /* External damage ETR sync check */
-#define ED_ETR_SWITCH   13      /* External damage ETR switch to local */
 
 /*
  * machine check handler.
@@ -325,15 +320,11 @@ void notrace s390_do_machine_check(struct pt_regs *regs)
         }
         if (mci.ed && mci.ec) {
                 /* External damage */
-                if (S390_lowcore.external_damage_code & (1U << ED_ETR_SYNC))
-                        mcck->etr_queue |= etr_sync_check();
-                if (S390_lowcore.external_damage_code & (1U << ED_ETR_SWITCH))
-                        mcck->etr_queue |= etr_switch_to_local();
                 if (S390_lowcore.external_damage_code & (1U << ED_STP_SYNC))
                         mcck->stp_queue |= stp_sync_check();
                 if (S390_lowcore.external_damage_code & (1U << ED_STP_ISLAND))
                         mcck->stp_queue |= stp_island_check();
-                if (mcck->etr_queue || mcck->stp_queue)
+                if (mcck->stp_queue)
                         set_cpu_flag(CIF_MCCK_PENDING);
         }
         if (mci.se)