Tomas Melin 5ad7f18cd8 net: macb: Restart tx only if queue pointer is lagging ... commit 4298388574 ("net: macb: restart tx after tx used bit read") added support for restarting transmission. Restarting tx does not work in case controller asserts TXUBR interrupt and TQBP is already at the end of the tx queue. In that situation, restarting tx will immediately cause assertion of another TXUBR interrupt. The driver will end up in an infinite interrupt loop which it cannot break out of. For cases where TQBP is at the end of the tx queue, instead only clear TX_USED interrupt. As more data gets pushed to the queue, transmission will resume. This issue was observed on a Xilinx Zynq-7000 based board. During stress test of the network interface, driver would get stuck on interrupt loop within seconds or minutes causing CPU to stall. Signed-off-by: Tomas Melin <tomas.melin@vaisala.com> Tested-by: Claudiu Beznea <claudiu.beznea@microchip.com> Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com> Link: https://lore.kernel.org/r/20220407161659.14532-1-tomas.melin@vaisala.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2022-04-11 18:18:07 -07:00
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Kconfig	ethernet: fix PTP_1588_CLOCK dependencies	2021-08-13 17:49:05 -07:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
macb.h	net: macb: Added ZynqMP-specific initialization	2022-01-29 17:49:21 +00:00
macb_main.c	net: macb: Restart tx only if queue pointer is lagging	2022-04-11 18:18:07 -07:00
macb_pci.c	net: macb: fix use after free on rmmod	2021-09-09 10:55:44 +01:00
macb_ptp.c	net_tstamp: add new flag HWTSTAMP_FLAG_BONDED_PHC_INDEX	2021-12-14 12:28:24 +00:00