Re: [PATCH v2 net 4/9] net: enetc: VFs do not support HWTSTAMP_TX_ONESTEP_SYNC
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: 2025-02-20 16:52:18
Also in:
imx, lkml, stable
On Wed, Feb 19, 2025 at 01:42:42PM +0800, Wei Fang wrote:
Actually ENETC VFs do not support HWTSTAMP_TX_ONESTEP_SYNC because only
ENETC PF can access PMa_SINGLE_STEP registers. And there will be a crash
if VFs are used to test one-step timestamp, the crash log as follows.
[ 129.110909] Unable to handle kernel paging request at virtual address 00000000000080c0
[ 129.287769] Call trace:
[ 129.290219] enetc_port_mac_wr+0x30/0xec (P)
[ 129.294504] enetc_start_xmit+0xda4/0xe74
[ 129.298525] enetc_xmit+0x70/0xec
[ 129.301848] dev_hard_start_xmit+0x98/0x118
Fixes: 41514737ecaa ("enetc: add get_ts_info interface for ethtool")
Cc: stable@vger.kernel.org
Signed-off-by: Wei Fang <wei.fang@nxp.com>
---Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>