rt2x00: rework RT chipset and revision determination for PCI an SOC devices.

The recent rt2800 devices are no longer really identified by their PCI
ID's, but rather by the contents of their CSR0 register. Also for the
other chipsets is the contents of this CSR0 register important.
Change the chipset determination logic to be more aligned with the rt2800
model.
Preparation for the support of rt3070 / rt3090 based devices.

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

1 files changed, 2 insertions, 7 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2400pci.c b/drivers/net/wireless/rt2x00/rt2400pci.c
index 9207b9b100b0..676814d3a81b 100644
--- a/drivers/net/wireless/rt2x00/rt2400pci.c
+++ b/drivers/net/wireless/rt2x00/rt2400pci.c
@@ -1327,7 +1327,6 @@ static int rt2400pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
 static int rt2400pci_init_eeprom(struct rt2x00_dev *rt2x00dev)
 {
         u32 reg;
-        u16 chip;
         u16 value;
         u16 eeprom;
 
@@ -1337,16 +1336,12 @@ static int rt2400pci_init_eeprom(struct rt2x00_dev *rt2x00dev)
         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
 
         /*
-         * Identify RT chipset.
-         */
-        pci_read_config_word(to_pci_dev(rt2x00dev->dev), PCI_DEVICE_ID, &chip);
-
-        /*
          * Identify RF chipset.
          */
         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
         rt2x00pci_register_read(rt2x00dev, CSR0, &reg);
-        rt2x00_set_chip(rt2x00dev, chip, value, reg);
+        rt2x00_set_chip(rt2x00dev, RT2460, value,
+                        rt2x00_get_field32(reg, CSR0_REVISION));
 
         if (!rt2x00_rf(rt2x00dev, RF2420) && !rt2x00_rf(rt2x00dev, RF2421)) {
                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");