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authorIvan Vecera <ivecera@redhat.com>2011-01-27 12:24:11 +0100
committerFrancois Romieu <romieu@fr.zoreil.com>2011-02-04 10:38:06 +0100
commitb5ba6d12bdac21bc0620a5089e0f24e362645efd (patch)
treecf05af9501d60e87977e9ff808bdabe05da85f92
parent38db9e1db1c91c953b2a539130257ce91533c9f6 (diff)
r8169: use RxFIFO overflow workaround for 8168c chipset.
I found that one of the 8168c chipsets (concretely XID 1c4000c0) starts generating RxFIFO overflow errors. The result is an infinite loop in interrupt handler as the RxFIFOOver is handled only for ...MAC_VER_11. With the workaround everything goes fine. Signed-off-by: Ivan Vecera <ivecera@redhat.com> Acked-by: Francois Romieu <romieu@fr.zoreil.com> Cc: Hayes <hayeswang@realtek.com>
-rw-r--r--drivers/net/r8169.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index bde7d61f193..9ab3b43c7d0 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -3757,7 +3757,8 @@ static void rtl_hw_start_8168(struct net_device *dev)
RTL_W16(IntrMitigate, 0x5151);
/* Work around for RxFIFO overflow. */
- if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
+ if (tp->mac_version == RTL_GIGA_MAC_VER_11 ||
+ tp->mac_version == RTL_GIGA_MAC_VER_22) {
tp->intr_event |= RxFIFOOver | PCSTimeout;
tp->intr_event &= ~RxOverflow;
}
@@ -4641,7 +4642,8 @@ static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
/* Work around for rx fifo overflow */
if (unlikely(status & RxFIFOOver) &&
- (tp->mac_version == RTL_GIGA_MAC_VER_11)) {
+ (tp->mac_version == RTL_GIGA_MAC_VER_11 ||
+ tp->mac_version == RTL_GIGA_MAC_VER_22)) {
netif_stop_queue(dev);
rtl8169_tx_timeout(dev);
break;