diff options
| author |   Wei Fang <wei.fang@nxp.com> | 2022-08-30 15:01:48 +0800 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2022-09-02 21:12:01 -0700 |
| commit | 7d650df99d528f674cc744719a00a20be1f912f8 (patch) | |
| tree | 53df0b9f3400cc145671e48c7c867cb72995b401 /drivers/net/ethernet/freescale/fec_main.c | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf (diff) | |
| download | wireguard-linux-7d650df99d528f674cc744719a00a20be1f912f8.tar.xz wireguard-linux-7d650df99d528f674cc744719a00a20be1f912f8.zip | |
net: fec: add pm_qos support on imx6q platform
There is a very low probability that tx timeout will occur during
suspend and resume stress test on imx6q platform. So we add pm_qos
support to prevent system from entering low level idles which may
affect the transmission of tx.
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Link: https://lore.kernel.org/r/20220830070148.2021947-1-wei.fang@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/freescale/fec_main.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index b0d60f898249..111aaef33080 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -111,7 +111,8 @@ static const struct fec_devinfo fec_imx6q_info = { .quirks = FEC_QUIRK_ENET_MAC | FEC_QUIRK_HAS_GBIT | FEC_QUIRK_HAS_BUFDESC_EX | FEC_QUIRK_HAS_CSUM | FEC_QUIRK_HAS_VLAN | FEC_QUIRK_ERR006358 | - FEC_QUIRK_HAS_RACC | FEC_QUIRK_CLEAR_SETUP_MII, + FEC_QUIRK_HAS_RACC | FEC_QUIRK_CLEAR_SETUP_MII | + FEC_QUIRK_HAS_PMQOS, }; static const struct fec_devinfo fec_mvf600_info = { @@ -3244,6 +3245,9 @@ fec_enet_open(struct net_device *ndev) if (fep->quirks & FEC_QUIRK_ERR006687) imx6q_cpuidle_fec_irqs_used(); + if (fep->quirks & FEC_QUIRK_HAS_PMQOS) + cpu_latency_qos_add_request(&fep->pm_qos_req, 0); + napi_enable(&fep->napi); phy_start(ndev->phydev); netif_tx_start_all_queues(ndev); @@ -3285,6 +3289,9 @@ fec_enet_close(struct net_device *ndev) fec_enet_update_ethtool_stats(ndev); fec_enet_clk_enable(ndev, false); + if (fep->quirks & FEC_QUIRK_HAS_PMQOS) + cpu_latency_qos_remove_request(&fep->pm_qos_req); + pinctrl_pm_select_sleep_state(&fep->pdev->dev); pm_runtime_mark_last_busy(&fep->pdev->dev); pm_runtime_put_autosuspend(&fep->pdev->dev); |