r8169: change interrupt mask type to u32

RTL8125 uses a 32 bit interrupt mask even though only bits in the
lower 16 bits are used. Change interrupt mask size to u32 to be
prepared and reintroduce helper rtl_get_events.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index faa4041..bf00c3d 100644 (file)
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -645,7 +645,7 @@ struct rtl8169_private {
        struct page *Rx_databuff[NUM_RX_DESC];  /* Rx data buffers */
        struct ring_info tx_skb[NUM_TX_DESC];   /* Tx data buffers */
        u16 cp_cmd;
-       u16 irq_mask;
+       u32 irq_mask;
        struct clk *clk;
 
        struct {
@@ -1313,7 +1313,12 @@ static u8 rtl8168d_efuse_read(struct rtl8169_private *tp, int reg_addr)
                RTL_R32(tp, EFUSEAR) & EFUSEAR_DATA_MASK : ~0;
 }
 
-static void rtl_ack_events(struct rtl8169_private *tp, u16 bits)
+static u32 rtl_get_events(struct rtl8169_private *tp)
+{
+       return RTL_R16(tp, IntrStatus);
+}
+
+static void rtl_ack_events(struct rtl8169_private *tp, u32 bits)
 {
        RTL_W16(tp, IntrStatus, bits);
 }
@@ -1337,7 +1342,7 @@ static void rtl_irq_enable(struct rtl8169_private *tp)
 static void rtl8169_irq_mask_and_ack(struct rtl8169_private *tp)
 {
        rtl_irq_disable(tp);
-       rtl_ack_events(tp, 0xffff);
+       rtl_ack_events(tp, 0xffffffff);
        /* PCI commit */
        RTL_R8(tp, ChipCmd);
 }
@@ -5854,9 +5859,10 @@ release_descriptor:
 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
 {
        struct rtl8169_private *tp = dev_instance;
-       u16 status = RTL_R16(tp, IntrStatus);
+       u32 status = rtl_get_events(tp);
 
-       if (!tp->irq_enabled || status == 0xffff || !(status & tp->irq_mask))
+       if (!tp->irq_enabled || (status & 0xffff) == 0xffff ||
+           !(status & tp->irq_mask))
                return IRQ_NONE;
 
        if (unlikely(status & SYSErr)) {