diff options
| -rw-r--r-- | arch/s390/kernel/nmi.c | 10 | ||||
| -rw-r--r-- | arch/s390/lib/delay.c | 14 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio_thinint.c | 2 |
3 files changed, 14 insertions, 12 deletions
diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c index ac15139..1995c17 100644 --- a/arch/s390/kernel/nmi.c +++ b/arch/s390/kernel/nmi.c @@ -95,7 +95,6 @@ EXPORT_SYMBOL_GPL(s390_handle_mcck); static int notrace s390_revalidate_registers(struct mci *mci) { int kill_task; - u64 tmpclock; u64 zero; void *fpt_save_area, *fpt_creg_save_area; @@ -214,11 +213,10 @@ static int notrace s390_revalidate_registers(struct mci *mci) : "0", "cc"); #endif /* Revalidate clock comparator register */ - asm volatile( - " stck 0(%1)\n" - " sckc 0(%1)" - : "=m" (tmpclock) : "a" (&(tmpclock)) : "cc", "memory"); - + if (S390_lowcore.clock_comparator == -1) + set_clock_comparator(S390_lowcore.mcck_clock); + else + set_clock_comparator(S390_lowcore.clock_comparator); /* Check if old PSW is valid */ if (!mci->wp) /* diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c index 752b362..7c37ec3 100644 --- a/arch/s390/lib/delay.c +++ b/arch/s390/lib/delay.c @@ -29,17 +29,21 @@ static void __udelay_disabled(unsigned long long usecs) { unsigned long mask, cr0, cr0_saved; u64 clock_saved; + u64 end; + mask = psw_kernel_bits | PSW_MASK_WAIT | PSW_MASK_EXT; + end = get_clock() + (usecs << 12); clock_saved = local_tick_disable(); - set_clock_comparator(get_clock() + (usecs << 12)); __ctl_store(cr0_saved, 0, 0); cr0 = (cr0_saved & 0xffff00e0) | 0x00000800; __ctl_load(cr0 , 0, 0); - mask = psw_kernel_bits | PSW_MASK_WAIT | PSW_MASK_EXT; lockdep_off(); - trace_hardirqs_on(); - __load_psw_mask(mask); - local_irq_disable(); + do { + set_clock_comparator(end); + trace_hardirqs_on(); + __load_psw_mask(mask); + local_irq_disable(); + } while (get_clock() < end); lockdep_on(); __ctl_load(cr0_saved, 0, 0); local_tick_enable(clock_saved); diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c index 752dbee..5d9c666 100644 --- a/drivers/s390/cio/qdio_thinint.c +++ b/drivers/s390/cio/qdio_thinint.c @@ -292,8 +292,8 @@ void qdio_shutdown_thinint(struct qdio_irq *irq_ptr) return; /* reset adapter interrupt indicators */ - put_indicator(irq_ptr->dsci); set_subchannel_ind(irq_ptr, 1); + put_indicator(irq_ptr->dsci); } void __exit tiqdio_unregister_thinints(void) |