]> git.itanic.dy.fi Git - linux-stable/commit
net: stmmac: set TxQ mode back to DCB after disabling CBS
authorMohammad Athari Bin Ismail <mohammad.athari.ismail@intel.com>
Thu, 4 Feb 2021 14:03:16 +0000 (22:03 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 17 Feb 2021 10:02:26 +0000 (11:02 +0100)
commit284abe15c17e5f440b01a46f61948d3fa6b767a1
tree129a3c747b4bcfb4956c185daf267df3f747bb4d
parent25c312214d9f7b0876892b5997a167c0a9a21c7d
net: stmmac: set TxQ mode back to DCB after disabling CBS

[ Upstream commit f317e2ea8c88737aa36228167b2292baef3f0430 ]

When disable CBS, mode_to_use parameter is not updated even the operation
mode of Tx Queue is changed to Data Centre Bridging (DCB). Therefore,
when tc_setup_cbs() function is called to re-enable CBS, the operation
mode of Tx Queue remains at DCB, which causing CBS fails to work.

This patch updates the value of mode_to_use parameter to MTL_QUEUE_DCB
after operation mode of Tx Queue is changed to DCB in stmmac_dma_qmode()
callback function.

Fixes: 1f705bc61aee ("net: stmmac: Add support for CBS QDISC")
Suggested-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: Mohammad Athari Bin Ismail <mohammad.athari.ismail@intel.com>
Signed-off-by: Song, Yoong Siang <yoong.siang.song@intel.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Link: https://lore.kernel.org/r/1612447396-20351-1-git-send-email-yoong.siang.song@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c