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linux-uconsole/drivers/net/ethernet/microchip
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Bryan Whitehead ab13fe32a0 lan743x: Fix TX Stall Issue 
[ Upstream commit deb6bfabdb ]

It has been observed that tx queue may stall while downloading
from certain web sites (example www.speedtest.net)

The cause has been tracked down to a corner case where
the tx interrupt vector was disabled automatically, but
was not re enabled later.

The lan743x has two mechanisms to enable/disable individual
interrupts. Interrupts can be enabled/disabled by individual
source, and they can also be enabled/disabled by individual
vector which has been mapped to the source. Both must be
enabled for interrupts to work properly.

The TX code path, primarily uses the interrupt enable/disable of
the TX source bit, while leaving the vector enabled all the time.

However, while investigating this issue it was noticed that
the driver requested the use of the vector auto clear feature.

The test above revealed a case where the vector enable was
cleared unintentionally.

This patch fixes the issue by deleting the lines that request
the vector auto clear feature to be used.

Fixes: 23f0703c12 ("lan743x: Add main source files for new lan743x driver")
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-03-19 13:12:38 +01:00
..
enc28j60.c
enc28j60_hw.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
encx24j600-regmap.c
encx24j600.c
encx24j600_hw.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig net: lan743x: select CRC16 2018-08-13 20:43:32 -07:00
lan743x_ethtool.c lan743x: lan743x: Add PTP support 2018-08-11 11:42:18 -07:00
lan743x_ethtool.h lan743x: Add support for ethtool get_drvinfo 2018-07-23 14:09:18 -07:00
lan743x_main.c lan743x: Fix TX Stall Issue 2019-03-19 13:12:38 +01:00
lan743x_main.h lan743x: Enable driver to work with LAN7431 2018-12-05 19:31:58 +01:00
lan743x_ptp.c net: lan743x_ptp: convert to ktime_get_clocktai_ts64 2018-08-19 10:56:40 -07:00
lan743x_ptp.h net: lan743x: fix building without CONFIG_PTP_1588_CLOCK 2018-08-13 20:43:47 -07:00
Makefile lan743x: lan743x: Add PTP support 2018-08-11 11:42:18 -07:00