The ralink SoC platforms do not have an MCU.

Signed-off-by: Luis Correia <luis.f.correia@gmail.com>
---

--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -221,9 +221,9 @@ void rt2800_mcu_request(struct rt2x00_de
 	u32 reg;
 
 	/*
-	 * SOC devices don't support MCU requests.
+	 * some devices don't support MCU requests.
 	 */
-	if (rt2x00_is_soc(rt2x00dev))
+	if (!test_bit(DRIVER_REQUIRE_MCU, &rt2x00dev->flags))
 		return;
 
 	mutex_lock(&rt2x00dev->csr_mutex);
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -60,6 +60,12 @@ static void rt2800pci_mcu_status(struct 
 	unsigned int i;
 	u32 reg;
 
+	/*
+	 * some devices don't support MCU requests.
+	 */
+	if (!test_bit(DRIVER_REQUIRE_MCU, &rt2x00dev->flags))
+		return;
+
 	for (i = 0; i < 200; i++) {
 		rt2800_register_read(rt2x00dev, H2M_MAILBOX_CID, &reg);
 
@@ -1098,10 +1104,12 @@ static int rt2800pci_probe_hw(struct rt2
 	__set_bit(DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL, &rt2x00dev->flags);
 
 	/*
-	 * This device requires firmware.
+	 * This device requires firmware and MCU access.
 	 */
-	if (!rt2x00_is_soc(rt2x00dev))
+	if (!rt2x00_is_soc(rt2x00dev)){
 		__set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags);
+		__set_bit(DRIVER_REQUIRE_MCU, &rt2x00dev->flags);
+	}
 	__set_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags);
 	__set_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags);
 	if (!modparam_nohwcrypt)
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -631,6 +631,7 @@ enum rt2x00_flags {
 	 * Driver requirements
 	 */
 	DRIVER_REQUIRE_FIRMWARE,
+	DRIVER_REQUIRE_MCU,
 	DRIVER_REQUIRE_BEACON_GUARD,
 	DRIVER_REQUIRE_ATIM_QUEUE,
 	DRIVER_REQUIRE_DMA,