rt2800: disable DMA after firmware load

We can receive frames just after firmware load with current code, so
disable DMA just after firmware is loaded, not before.

Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2800lib.c

@@ -411,18 +411,6 @@ int rt2800_load_firmware(struct rt2x00_dev *rt2x00dev,
 		rt2800_register_write(rt2x00dev, PWR_PIN_CFG, 0x00000002);
 	}
 
-	/*
-	 * Disable DMA, will be reenabled later when enabling
-	 * the radio.
-	 */
-	rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
-	rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_TX_DMA, 0);
-	rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_DMA_BUSY, 0);
-	rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_RX_DMA, 0);
-	rt2x00_set_field32(&reg, WPDMA_GLO_CFG_RX_DMA_BUSY, 0);
-	rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_WRITEBACK_DONE, 1);
-	rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg);
-
 	/*
 	 * Write firmware to the device.
 	 */
@@ -443,6 +431,15 @@ int rt2800_load_firmware(struct rt2x00_dev *rt2x00dev,
 		return -EBUSY;
 	}
 
+	/*
+	 * Disable DMA, will be reenabled later when enabling
+	 * the radio.
+	 */
+	rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
+	rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_TX_DMA, 0);
+	rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_RX_DMA, 0);
+	rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg);
+
 	/*
 	 * Initialize firmware.
 	 */