rt2x00: Add rt2800_wait_csr_ready

Similar to rt2800_wait_wpdma_ready() we can add a
function to waiting until the CSR is ready. This
centralizes some additional code into rt2800lib.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index 25c44cf..7c68bf3 100644 (file)
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -255,6 +255,23 @@ void rt2800_mcu_request(struct rt2x00_dev *rt2x00dev,
 }
 EXPORT_SYMBOL_GPL(rt2800_mcu_request);
 
+int rt2800_wait_csr_ready(struct rt2x00_dev *rt2x00dev)
+{
+       unsigned int i = 0;
+       u32 reg;
+
+       for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
+               rt2800_register_read(rt2x00dev, MAC_CSR0, &reg);
+               if (reg && reg != ~0)
+                       return 0;
+               msleep(1);
+       }
+
+       ERROR(rt2x00dev, "Unstable hardware.\n");
+       return -EBUSY;
+}
+EXPORT_SYMBOL_GPL(rt2800_wait_csr_ready);
+
 int rt2800_wait_wpdma_ready(struct rt2x00_dev *rt2x00dev)
 {
        unsigned int i;
@@ -370,17 +387,8 @@ int rt2800_load_firmware(struct rt2x00_dev *rt2x00dev,
        /*
         * Wait for stable hardware.
         */
-       for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
-               rt2800_register_read(rt2x00dev, MAC_CSR0, &reg);
-               if (reg && reg != ~0)
-                       break;
-               msleep(1);
-       }
-
-       if (i == REGISTER_BUSY_COUNT) {
-               ERROR(rt2x00dev, "Unstable hardware.\n");
+       if (rt2800_wait_csr_ready(rt2x00dev))
                return -EBUSY;
-       }
 
        if (rt2x00_is_pci(rt2x00dev))
                rt2800_register_write(rt2x00dev, PWR_PIN_CFG, 0x00000002);

diff --git a/drivers/net/wireless/rt2x00/rt2800lib.h b/drivers/net/wireless/rt2x00/rt2800lib.h
index deb10b1..986229c 100644 (file)
--- a/drivers/net/wireless/rt2x00/rt2800lib.h
+++ b/drivers/net/wireless/rt2x00/rt2800lib.h
@@ -140,6 +140,7 @@ void rt2800_mcu_request(struct rt2x00_dev *rt2x00dev,
                        const u8 command, const u8 token,
                        const u8 arg0, const u8 arg1);
 
+int rt2800_wait_csr_ready(struct rt2x00_dev *rt2x00dev);
 int rt2800_wait_wpdma_ready(struct rt2x00_dev *rt2x00dev);
 
 int rt2800_check_firmware(struct rt2x00_dev *rt2x00dev,

diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index 82ae58e..b1a8e94 100644 (file)
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -122,22 +122,12 @@ static void rt2800usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
 static int rt2800usb_init_registers(struct rt2x00_dev *rt2x00dev)
 {
        u32 reg;
-       int i;
 
        /*
         * Wait until BBP and RF are ready.
         */
-       for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
-               rt2800_register_read(rt2x00dev, MAC_CSR0, &reg);
-               if (reg && reg != ~0)
-                       break;
-               msleep(1);
-       }
-
-       if (i == REGISTER_BUSY_COUNT) {
-               ERROR(rt2x00dev, "Unstable hardware.\n");
+       if (rt2800_wait_csr_ready(rt2x00dev))
                return -EBUSY;
-       }
 
        rt2800_register_read(rt2x00dev, PBF_SYS_CTRL, &reg);
        rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, reg & ~0x00002000);