rt2800: comment enable radio initialization sequence

[firefly-linux-kernel-4.4.55.git] / drivers / net / wireless / rt2x00 / rt2800lib.c

diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index 88ce656f96cda3d7ea1f7ae5756827538edfc6d2..470a7aa11f17684f64d25c77ae1767f8e3b33466 100644 (file)
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -6653,17 +6653,20 @@ int rt2800_enable_radio(struct rt2x00_dev *rt2x00dev)
        u16 word;
 
        /*
-        * Initialize all registers.
+        * Initialize MAC registers.
         */
        if (unlikely(rt2800_wait_wpdma_ready(rt2x00dev) ||
                     rt2800_init_registers(rt2x00dev)))
                return -EIO;
 
+       /*
+        * Wait BBP/RF to wake up.
+        */
        if (unlikely(rt2800_wait_bbp_rf_ready(rt2x00dev)))
                return -EIO;
 
        /*
-        * Send signal to firmware during boot time.
+        * Send signal during boot time to initialize firmware.
         */
        rt2800_register_write(rt2x00dev, H2M_BBP_AGENT, 0);
        rt2800_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0);
@@ -6672,9 +6675,15 @@ int rt2800_enable_radio(struct rt2x00_dev *rt2x00dev)
        rt2800_mcu_request(rt2x00dev, MCU_BOOT_SIGNAL, 0, 0, 0);
        msleep(1);
 
+       /*
+        * Make sure BBP is up and running.
+        */
        if (unlikely(rt2800_wait_bbp_ready(rt2x00dev)))
                return -EIO;
 
+       /*
+        * Initialize BBP/RF registers.
+        */
        rt2800_init_bbp(rt2x00dev);
        rt2800_init_rfcsr(rt2x00dev);