Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

[sfrench/cifs-2.6.git] / arch / s390 / kernel / smp.c

diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index c932caa5e8504e3e026708f2efe16f44ad0ce316..93e52039321b1f6bcb2a89c335c3c9b4ef1c1104 100644 (file)
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -76,7 +76,6 @@ static int cpu_stopped(int cpu)
        __u32 status;
 
        switch (signal_processor_ps(&status, 0, cpu, sigp_sense)) {
-       case sigp_order_code_accepted:
        case sigp_status_stored:
                /* Check for stopped and check stop state */
                if (status & 0x50)
@@ -638,6 +637,8 @@ void __cpu_die(unsigned int cpu)
        /* Wait until target cpu is down */
        while (!cpu_stopped(cpu))
                cpu_relax();
+       while (signal_processor_p(0, cpu, sigp_set_prefix) == sigp_busy)
+               udelay(10);
        smp_free_lowcore(cpu);
        pr_info("Processor %d stopped\n", cpu);
 }
@@ -645,8 +646,8 @@ void __cpu_die(unsigned int cpu)
 void cpu_die(void)
 {
        idle_task_exit();
-       signal_processor(smp_processor_id(), sigp_stop);
-       BUG();
+       while (signal_processor(smp_processor_id(), sigp_stop) == sigp_busy)
+               cpu_relax();
        for (;;);
 }