Some IP cores of dc2114x or its variants do not comply so well with
the behaviors described by the official document. A packet could be
sent successfully but reported with No Carrier error. Latest drivers
of this IP core have not detect this error anymore.
Signed-off-by: Hanyuan Zhao <zhaoh...@mails.tsinghua.edu.cn>
---
drivers/net/Kconfig | 11 +++++++++++
drivers/net/dc2114x.c | 2 ++
2 files changed, 13 insertions(+)
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 41b7c66105..d79d8ad9c4 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -748,6 +748,17 @@ config TULIP_SUPPORT_NON_PCI
Say Y to this and you can run this driver on platforms that do not
have PCI controllers.
+config TULIP_IGNORE_TX_NO_CARRIER
+ bool "Ignore tx no carrier error"
+ depends on TULIP
+ default n
+ help
+ Some IP cores of dc2114x or its variants do not comply so well with
+ the behaviors described by the official document. A packet could be
+ sent successfully but reported with No Carrier error. Latest drivers
+ of this IP core do not detect this error anymore. Say Y to this could
+ disable handling of this error.
+
config XILINX_AXIEMAC
select PHYLIB
select MII
diff --git a/drivers/net/dc2114x.c b/drivers/net/dc2114x.c
index 8a285742a1..dc28712221 100644
--- a/drivers/net/dc2114x.c
+++ b/drivers/net/dc2114x.c
@@ -371,7 +371,9 @@ static int dc21x4x_send_common(struct dc2114x_priv *priv,
void *packet, int leng
if (le32_to_cpu(priv->tx_ring[priv->tx_new].status) & TD_ES) {
priv->tx_ring[priv->tx_new].status = 0x0;
+#if !CONFIG_IS_ENABLED(TULIP_IGNORE_TX_NO_CARRIER)
goto done;
+#endif
}
status = length;
--
2.39.2
