driver inclusion category: bugfix bugzilla: https://atomgit.com/openeuler/kernel/issues/9393 -------------------------------- If NetworkManager let nic down, it call ndo_stop (fxgmac_close). Then do "kexec -l /boot/vmlinuz-6.6.0-156.0.0.146.oe2403sp4.loongarch64 --initrd=/boot/initramfs-6.6.0-156.0.0.146.oe2403sp4.loongarch64.img kexec -e", it will call the fxgmac_disable_rx in fxgmac_shutdown, cause a panic: Unable to handle kernel paging request at virtual address 0000000000000398 Fixes: 6460d9d3c42d ("yt6801: Add Motorcomm yt6801 PCIe driver") Signed-off-by: Frank_Sae <Frank.Sae@motor-comm.com> --- drivers/net/ethernet/motorcomm/yt6801/yt6801_main.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/motorcomm/yt6801/yt6801_main.c b/drivers/net/ethernet/motorcomm/yt6801/yt6801_main.c index 4f2f82293125..b0f56d9d4991 100644 --- a/drivers/net/ethernet/motorcomm/yt6801/yt6801_main.c +++ b/drivers/net/ethernet/motorcomm/yt6801/yt6801_main.c @@ -1429,6 +1429,10 @@ static int fxgmac_net_powerdown(struct fxgmac_pdata *priv) return 0; /* do nothing if already down */ __clear_bit(FXGMAC_POWER_STATE_UP, &priv->power_state); + + if (priv->dev_state == FXGMAC_DEV_CLOSE) + return 0; /* do nothing if already close */ + netif_tx_stop_all_queues(ndev); /* Shut off incoming Tx traffic */ /* Call carrier off first to avoid false dev_watchdog timeouts */ -- 2.30.2