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igc: reinit_locked() should be called with rtnl_lock

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[ Upstream commit 6da262378c99b17b1a1ac2e42aa65acc1bd471c7 ]

This commit applies to the igc_reset_task the same changes that
were applied to the igb driver in commit 024a8168b749 ("igb:
reinit_locked() should be called with rtnl_lock")
and fix possible race in reset subtask.

Fixes: 0507ef8a0372 ("igc: Add transmit and receive fastpath and interrupt handlers")
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sasha Neftin 2020-10-20 16:34:00 +03:00 committed by Greg Kroah-Hartman
parent 4c91fc60e3
commit d85ffade49
1 changed files with 9 additions and 0 deletions
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9
drivers/net/ethernet/intel/igc/igc_main.c
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@ -3846,10 +3846,19 @@ static void igc_reset_task(struct work_struct *work)
adapter = container_of(work, struct igc_adapter, reset_task);
rtnl_lock();
/* If we're already down or resetting, just bail */
if (test_bit(__IGC_DOWN, &adapter->state) ||
test_bit(__IGC_RESETTING, &adapter->state)) {
rtnl_unlock();
return;
}
igc_rings_dump(adapter);
igc_regs_dump(adapter);
netdev_err(adapter->netdev, "Reset adapter\n");
igc_reinit_locked(adapter);
rtnl_unlock();
}
/**