Vincenzo Maffione 44c445c3d1 e1000: fix race condition between e1000_down() and e1000_watchdog ... This patch fixes a race condition that can result into the interface being up and carrier on, but with transmits disabled in the hardware. The bug may show up by repeatedly IFF_DOWN+IFF_UP the interface, which allows e1000_watchdog() interleave with e1000_down(). CPU x CPU y -------------------------------------------------------------------- e1000_down(): netif_carrier_off() e1000_watchdog(): if (carrier == off) { netif_carrier_on(); enable_hw_transmit(); } disable_hw_transmit(); e1000_watchdog(): /* carrier on, do nothing */ Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>		2017-10-26 07:42:57 -07:00
..
e1000_ethtool.c	e1000: use new API ethtool_{get|set}_link_ksettings	2017-03-21 15:27:58 -07:00
e1000_hw.c	e1000: Elementary checkpatch warnings and checks removed	2015-12-12 23:13:52 -08:00
e1000_hw.h	e1000: move e1000_tbi_adjust_stats to where its used	2014-09-12 00:51:10 -07:00
e1000_main.c	e1000: fix race condition between e1000_down() and e1000_watchdog	2017-10-26 07:42:57 -07:00
e1000_osdep.h
e1000_param.c	e1000: fix whitespace issues and multi-line comments	2013-02-15 21:46:37 -08:00
e1000.h	e1000: call ndo_stop() instead of dev_close() when running offline selftest	2016-04-06 14:47:55 -07:00
Makefile