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>
mariux64 · Aug 12, 2010 · 628bfd4 · 628bfd4
1 parent f0bc0c7
commit 628bfd4
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c
@@ -211,9 +211,9 @@ static uint16_t denali_nand_reset(struct denali_nand_info *denali)
 		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,