diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 7222a18a03198d0bc70121d1246dc27af1d0629e..828c75292cf69f7bbfe12f1f333c2351cdc3c415 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -73,6 +73,7 @@ enum ec_event {
 
 #define ACPI_EC_DELAY		500	/* Wait 500ms max. during EC ops */
 #define ACPI_EC_UDELAY_GLK	1000	/* Wait 1ms max. to get global lock */
+#define ACPI_EC_UDELAY		100	/* Wait 100us before polling EC again */
 
 enum {
 	EC_FLAGS_WAIT_GPE = 0,		/* Don't check status until GPE arrives */
@@ -227,6 +228,7 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
 		while (time_before(jiffies, delay)) {
 			if (acpi_ec_check_status(ec, event))
 				goto end;
+			udelay(ACPI_EC_UDELAY);
 		}
 	}
 	pr_err(PREFIX "acpi_ec_wait timeout,"