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-rw-r--r--arch/ia64/sn/kernel/bte.c1
-rw-r--r--arch/ia64/sn/kernel/huberror.c2
-rw-r--r--arch/ia64/sn/pci/pcibr/pcibr_dma.c3
-rw-r--r--include/asm-ia64/sn/sn_sal.h3
4 files changed, 6 insertions, 3 deletions
diff --git a/arch/ia64/sn/kernel/bte.c b/arch/ia64/sn/kernel/bte.c
index 7adef84190db..b75814efadba 100644
--- a/arch/ia64/sn/kernel/bte.c
+++ b/arch/ia64/sn/kernel/bte.c
@@ -215,6 +215,7 @@ retry_bteop:
}
while ((transfer_stat = *bte->most_rcnt_na) == BTE_WORD_BUSY) {
+ cpu_relax();
if (ia64_get_itc() > itc_end) {
BTE_PRINTK(("BTE timeout nasid 0x%x bte%d IBLS = 0x%lx na 0x%lx\n",
NASID_GET(bte->bte_base_addr), bte->bte_num,
diff --git a/arch/ia64/sn/kernel/huberror.c b/arch/ia64/sn/kernel/huberror.c
index 5c39b43ba3c0..5c5eb01c50f0 100644
--- a/arch/ia64/sn/kernel/huberror.c
+++ b/arch/ia64/sn/kernel/huberror.c
@@ -76,7 +76,7 @@ void hubiio_crb_free(struct hubdev_info *hubdev_info, int crbnum)
*/
REMOTE_HUB_S(hubdev_info->hdi_nasid, IIO_ICDR, (IIO_ICDR_PND | crbnum));
while (REMOTE_HUB_L(hubdev_info->hdi_nasid, IIO_ICDR) & IIO_ICDR_PND)
- udelay(1);
+ cpu_relax();
}
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_dma.c b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
index 0f254255f6a1..34093476e965 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_dma.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
@@ -317,7 +317,8 @@ void sn_dma_flush(uint64_t addr)
*(volatile uint32_t *)(p->sfdl_force_int_addr) = 1;
/* wait for the interrupt to come back. */
- while (*(p->sfdl_flush_addr) != 0x10f) ;
+ while (*(p->sfdl_flush_addr) != 0x10f)
+ cpu_relax();
/* okay, everything is synched up. */
spin_unlock_irqrestore((spinlock_t *)&p->sfdl_flush_lock, flags);
diff --git a/include/asm-ia64/sn/sn_sal.h b/include/asm-ia64/sn/sn_sal.h
index 27976d223186..99cb9ed34312 100644
--- a/include/asm-ia64/sn/sn_sal.h
+++ b/include/asm-ia64/sn/sn_sal.h
@@ -749,7 +749,8 @@ ia64_sn_power_down(void)
{
struct ia64_sal_retval ret_stuff;
SAL_CALL(ret_stuff, SN_SAL_SYSTEM_POWER_DOWN, 0, 0, 0, 0, 0, 0, 0);
- while(1);
+ while(1)
+ cpu_relax();
/* never returns */
}