| From | Sasha Levin <> | Subject | [PATCH AUTOSEL for 4.4 058/162] sfc: remove duplicate up_write on VF filter_sem | Date | Mon, 9 Apr 2018 00:28:24 +0000 |
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From: Edward Cree <ecree@solarflare.com>
[ Upstream commit 57f0c9cf58ff7fe479137ab847a886d0eed3ad1d ]
Somehow two copies of the line 'up_write(&vf->efx->filter_sem);' got into efx_ef10_sriov_set_vf_vlan(). This would put the mutex in a bad state and cause all subsequent down attempts to hang.
Fixes: 671b53eec2ed ("sfc: Ensure down_write(&filter_sem) and up_write() are matched before calling efx_net_open()") Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> --- drivers/net/ethernet/sfc/ef10_sriov.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/drivers/net/ethernet/sfc/ef10_sriov.c b/drivers/net/ethernet/sfc/ef10_sriov.c index 3c17f274e802..a0226b11eab2 100644 --- a/drivers/net/ethernet/sfc/ef10_sriov.c +++ b/drivers/net/ethernet/sfc/ef10_sriov.c @@ -631,8 +631,6 @@ restore_filters: up_write(&vf->efx->filter_sem); - up_write(&vf->efx->filter_sem); - rc2 = efx_net_open(vf->efx->net_dev); if (rc2) goto reset_nic; -- 2.15.1
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