nand/denali: use cpu_relax() while waiting for hardware interrupt
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c
index 975a893..5f7c8c8 100644
--- a/drivers/mtd/nand/denali.c
+++ b/drivers/mtd/nand/denali.c
@@ -211,9 +211,9 @@
iowrite32(device_reset_banks[i],
denali->flash_reg + DEVICE_RESET);
while (!(ioread32(denali->flash_reg +
- intr_status_addresses[i]) &
+ intr_status_addresses[i]) &
(reset_complete[i] | operation_timeout[i])))
- ;
+ cpu_relax();
if (ioread32(denali->flash_reg + intr_status_addresses[i]) &
operation_timeout[i])
dev_dbg(&denali->dev->dev,