net: wangxun: Fix vector length of interrupt cause

There is 64-bit interrupt cause register for txgbe. Fix to clear upper
32 bits.

Fixes: 3f703186 ("net: libwx: Add irq flow functions")
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/20230322103632.132011-1-jiawenwu@trustnetic.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/wangxun/libwx/wx_type.h

@@ -222,7 +222,7 @@
 #define WX_PX_INTA                   0x110
 #define WX_PX_GPIE                   0x118
 #define WX_PX_GPIE_MODEL             BIT(0)
-#define WX_PX_IC                     0x120
+#define WX_PX_IC(_i)                 (0x120 + (_i) * 4)
 #define WX_PX_IMS(_i)                (0x140 + (_i) * 4)
 #define WX_PX_IMC(_i)                (0x150 + (_i) * 4)
 #define WX_PX_ISB_ADDR_L             0x160

drivers/net/ethernet/wangxun/ngbe/ngbe_main.c

@@ -352,7 +352,7 @@ static void ngbe_up(struct wx *wx)
 	netif_tx_start_all_queues(wx->netdev);
 
 	/* clear any pending interrupts, may auto mask */
-	rd32(wx, WX_PX_IC);
+	rd32(wx, WX_PX_IC(0));
 	rd32(wx, WX_PX_MISC_IC);
 	ngbe_irq_enable(wx, true);
 	if (wx->gpio_ctrl)

drivers/net/ethernet/wangxun/txgbe/txgbe_main.c

@@ -229,7 +229,8 @@ static void txgbe_up_complete(struct wx *wx)
 	wx_napi_enable_all(wx);
 
 	/* clear any pending interrupts, may auto mask */
-	rd32(wx, WX_PX_IC);
+	rd32(wx, WX_PX_IC(0));
+	rd32(wx, WX_PX_IC(1));
 	rd32(wx, WX_PX_MISC_IC);
 	txgbe_irq_enable(wx, true);