rt2x00: Cleanup/optimize set_state() function callback function

[linux-2.6] / drivers / net / wireless / rt2x00 / rt2500usb.c

diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c
index cca1504550dc6aa86347f42cd17e887b73ce05e3..a46e4a6eba9645ae1f86ddaf50328526c95db258 100644 (file)
--- a/drivers/net/wireless/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/rt2x00/rt2500usb.c
@@ -847,25 +847,32 @@ static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
        return 0;
 }
 
-static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
+static int rt2500usb_wait_bbp_ready(struct rt2x00_dev *rt2x00dev)
 {
        unsigned int i;
-       u16 eeprom;
        u8 value;
-       u8 reg_id;
 
        for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
                rt2500usb_bbp_read(rt2x00dev, 0, &value);
                if ((value != 0xff) && (value != 0x00))
-                       goto continue_csr_init;
-               NOTICE(rt2x00dev, "Waiting for BBP register.\n");
+                       return 0;
                udelay(REGISTER_BUSY_DELAY);
        }
 
        ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
        return -EACCES;
+}
+
+static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
+{
+       unsigned int i;
+       u16 eeprom;
+       u8 value;
+       u8 reg_id;
+
+       if (unlikely(rt2500usb_wait_bbp_ready(rt2x00dev)))
+               return -EACCES;
 
-continue_csr_init:
        rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
        rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
        rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
@@ -921,7 +928,8 @@ static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
 
        rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
        rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
-                          state == STATE_RADIO_RX_OFF);
+                          (state == STATE_RADIO_RX_OFF) ||
+                          (state == STATE_RADIO_RX_OFF_LINK));
        rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 }
 
@@ -930,11 +938,9 @@ static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
        /*
         * Initialize all registers.
         */
-       if (rt2500usb_init_registers(rt2x00dev) ||
-           rt2500usb_init_bbp(rt2x00dev)) {
-               ERROR(rt2x00dev, "Register initialization failed.\n");
+       if (unlikely(rt2500usb_init_registers(rt2x00dev) ||
+                    rt2500usb_init_bbp(rt2x00dev)))
                return -EIO;
-       }
 
        return 0;
 }
@@ -987,10 +993,6 @@ static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
                msleep(30);
        }
 
-       NOTICE(rt2x00dev, "Device failed to enter state %d, "
-              "current device state: bbp %d and rf %d.\n",
-              state, bbp_state, rf_state);
-
        return -EBUSY;
 }
 
@@ -1008,11 +1010,13 @@ static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
                break;
        case STATE_RADIO_RX_ON:
        case STATE_RADIO_RX_ON_LINK:
-               rt2500usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
-               break;
        case STATE_RADIO_RX_OFF:
        case STATE_RADIO_RX_OFF_LINK:
-               rt2500usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
+               rt2500usb_toggle_rx(rt2x00dev, state);
+               break;
+       case STATE_RADIO_IRQ_ON:
+       case STATE_RADIO_IRQ_OFF:
+               /* No support, but no error either */
                break;
        case STATE_DEEP_SLEEP:
        case STATE_SLEEP:
@@ -1025,6 +1029,10 @@ static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
                break;
        }
 
+       if (unlikely(retval))
+               ERROR(rt2x00dev, "Device failed to enter state %d (%d).\n",
+                     state, retval);
+
        return retval;
 }