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r8169: Handle rxfifo errors on 8168 chips 

The Thinkpad X100e seems to have some odd behaviour when the display is
powered off - the onboard r8169 starts generating rxfifo overflow errors.
The root cause of this has not yet been identified and may well be a
hardware design bug on the platform, but r8169 should be more resiliant to
this. This patch enables the rxfifo interrupt on 8168 devices and removes
the MAC version check in the interrupt handler, and the machine no longer
crashes when under network load while the screen turns off.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Matthew Garrett 2010-09-14 11:57:11 +00:00 committed by David S. Miller
parent 84176b7b56
commit 801e147cde
1 changed files with 2 additions and 3 deletions
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5
drivers/net/r8169.c
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@ -2934,7 +2934,7 @@ static const struct rtl_cfg_info {
.hw_start = rtl_hw_start_8168,
.region = 2,
.align = 8,
.intr_event = SYSErr | LinkChg | RxOverflow |
.intr_event = SYSErr | RxFIFOOver | LinkChg | RxOverflow |
TxErr | TxOK | RxOK | RxErr,
.napi_event = TxErr | TxOK | RxOK | RxOverflow,
.features = RTL_FEATURE_GMII | RTL_FEATURE_MSI,
@ -4625,8 +4625,7 @@ 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)) {
if (unlikely(status & RxFIFOOver)) {
netif_stop_queue(dev);
rtl8169_tx_timeout(dev);
break;