1 files changed, 16 insertions, 13 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
index 3bb2643d1b26..bfdbc15abaa9 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
@@ -9,28 +9,34 @@ static int mt7915_eeprom_load_precal(struct mt7915_dev *dev)
 {
 	struct mt76_dev *mdev = &dev->mt76;
 	u8 *eeprom = mdev->eeprom.data;
-	u32 val = eeprom[MT_EE_DO_PRE_CAL];
-	u32 offs;
+	u32 offs = is_mt7915(&dev->mt76) ? MT_EE_DO_PRE_CAL : MT_EE_DO_PRE_CAL_V2;
+	u32 size, val = eeprom[offs];
 	int ret;
 
-	if (!dev->flash_mode)
+	if (!dev->flash_mode || !val)
 		return 0;
 
-	if (val != (MT_EE_WIFI_CAL_DPD | MT_EE_WIFI_CAL_GROUP))
-		return 0;
+	size = mt7915_get_cal_group_size(dev) + mt7915_get_cal_dpd_size(dev);
 
-	val = MT_EE_CAL_GROUP_SIZE + MT_EE_CAL_DPD_SIZE;
-	dev->cal = devm_kzalloc(mdev->dev, val, GFP_KERNEL);
+	dev->cal = devm_kzalloc(mdev->dev, size, GFP_KERNEL);
 	if (!dev->cal)
 		return -ENOMEM;
 
 	offs = is_mt7915(&dev->mt76) ? MT_EE_PRECAL : MT_EE_PRECAL_V2;
 
-	ret = mt76_get_of_data_from_mtd(mdev, dev->cal, offs, val);
+	ret = mt76_get_of_data_from_mtd(mdev, dev->cal, offs, size);
 	if (!ret)
 		return ret;
 
-	return mt76_get_of_data_from_nvmem(mdev, dev->cal, "precal", val);
+	ret = mt76_get_of_data_from_nvmem(mdev, dev->cal, "precal", size);
+	if (!ret)
+		return ret;
+
+	dev_warn(mdev->dev, "missing precal data, size=%d\n", size);
+	devm_kfree(mdev->dev, dev->cal);
+	dev->cal = NULL;
+
+	return ret;
 }
 
 static int mt7915_check_eeprom(struct mt7915_dev *dev)
@@ -256,10 +262,7 @@ int mt7915_eeprom_init(struct mt7915_dev *dev)
 			return ret;
 	}
 
-	ret = mt7915_eeprom_load_precal(dev);
-	if (ret)
-		return ret;
-
+	mt7915_eeprom_load_precal(dev);
 	mt7915_eeprom_parse_hw_cap(dev, &dev->phy);
 	memcpy(dev->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR,
 	       ETH_ALEN);