rt2x00: Wakeup hardware before loading firmware
Ivo van Doorn [Mon, 30 Aug 2010 19:13:54 +0000 (21:13 +0200)]
According to the legacy drivers the AUTOWAKEUP_CFG
register must be reset to 0 before loading the firmware.

Instead of during rt2800{pci,usb}_write_firmware it
must actually be done in rt2800_load_firmware() before
resetting the WPDMA_GLO_CFG and PWR_PIN_CFG registers.

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>

drivers/net/wireless/rt2x00/rt2800lib.c
drivers/net/wireless/rt2x00/rt2800pci.c

index 1a81700..a5455f4 100644 (file)
@@ -385,6 +385,12 @@ int rt2800_load_firmware(struct rt2x00_dev *rt2x00dev,
        u32 reg;
 
        /*
+        * If driver doesn't wake up firmware here,
+        * rt2800_load_firmware will hang forever when interface is up again.
+        */
+       rt2800_register_write(rt2x00dev, AUTOWAKEUP_CFG, 0x00000000);
+
+       /*
         * Wait for stable hardware.
         */
        if (rt2800_wait_csr_ready(rt2x00dev))
index 4d93204..2bcb150 100644 (file)
@@ -196,8 +196,6 @@ static int rt2800pci_write_firmware(struct rt2x00_dev *rt2x00dev,
 {
        u32 reg;
 
-       rt2800_register_write(rt2x00dev, AUTOWAKEUP_CFG, 0x00000000);
-
        /*
         * enable Host program ram write selection
         */