diff options
| author | Alexander Duyck <alexander.h.duyck@linux.intel.com> | 2020-04-17 09:35:31 -0700 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2020-05-21 16:18:42 -0700 |
| commit | 49ee3c2ab5234757bfb56a0b3a3cb422f427e3a3 (patch) | |
| tree | 1e1cb2b0ae673a0c85864f77408370c8dbfc44b1 /drivers/net/ethernet/intel/igc/igc_main.c | |
| parent | 8eb2449d839079f979eded636dabcd6b815ff28f (diff) | |
e1000: Do not perform reset in reset_task if we are already down
We are seeing a deadlock in e1000 down when NAPI is being disabled. Looking
over the kernel function trace of the system it appears that the interface
is being closed and then a reset is hitting which deadlocks the interface
as the NAPI interface is already disabled.
To prevent this from happening I am disabling the reset task when
__E1000_DOWN is already set. In addition code has been added so that we set
the __E1000_DOWN while holding the __E1000_RESET flag in e1000_close in
order to guarantee that the reset task will not run after we have started
the close call.
Signed-off-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Tested-by: Maxim Zhukov <mussitantesmortem@gmail.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/igc/igc_main.c')
0 files changed, 0 insertions, 0 deletions