[S390] cpcmd <-> __cpcmd calling issues

In case of reipl cpcmd gets called when all other cpus are not running
anymore. To prevent deadlocks change __cpcmd so that it doesn't take
any locks and call cpcmd or __cpcmd, whatever is correct in the current
context.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 77f4aff630fe..101b003cfabf 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -677,7 +677,7 @@ void do_reipl(void)
                 else
                         sprintf(buf, "IPL %X LOADPARM '%s'",
                                 reipl_block_ccw->ipl_info.ccw.devno, loadparm);
-                cpcmd(buf, NULL, 0, NULL);
+                __cpcmd(buf, NULL, 0, NULL);
                 break;
         case IPL_METHOD_CCW_DIAG:
                 diag308(DIAG308_SET, reipl_block_ccw);
@@ -691,12 +691,12 @@ void do_reipl(void)
                 diag308(DIAG308_IPL, NULL);
                 break;
         case IPL_METHOD_FCP_RO_VM:
-                cpcmd("IPL", NULL, 0, NULL);
+                __cpcmd("IPL", NULL, 0, NULL);
                 break;
         case IPL_METHOD_NONE:
         default:
                 if (MACHINE_IS_VM)
-                        cpcmd("IPL", NULL, 0, NULL);
+                        __cpcmd("IPL", NULL, 0, NULL);
                 diag308(DIAG308_IPL, NULL);
                 break;
         }
@@ -732,9 +732,9 @@ static void do_dump(void)
         case IPL_METHOD_CCW_VM:
                 dump_smp_stop_all();
                 sprintf(buf, "STORE STATUS");
-                cpcmd(buf, NULL, 0, NULL);
+                __cpcmd(buf, NULL, 0, NULL);
                 sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno);
-                cpcmd(buf, NULL, 0, NULL);
+                __cpcmd(buf, NULL, 0, NULL);
                 break;
         case IPL_METHOD_CCW_DIAG:
                 diag308(DIAG308_SET, dump_block_ccw);