The hotplug port's POWER_CTRL(ctrl) is false. pciehp 0000:80:10.0:pcie004: Slot #36 AttnBtn- PwrCtrl- MRL- AttnInd+ PwrInd+ HotPlug+ Surprise+ Interlock- NoCompl- LLActRep+ Any suggestion will be appreciated. Thanks, Dongdong 在 2019/1/10 16:17, Dongdong Liu 写道:
Hi Bjorn, Keith The lspci -tv topology is as below. +-[0000:80]-+-00.0-[81]----00.0 Huawei Technologies Co., Ltd. Device 3714 | +-02.0-[82]----00.0 Huawei Technologies Co., Ltd. Device 3714 | +-04.0-[83]----00.0 Huawei Technologies Co., Ltd. Device 3714 | +-06.0-[84]----00.0 Huawei Technologies Co., Ltd. Device 3714 | +-08.0-[| +-0c.0-[86]-- | +-10.0-[87]----00.0 Huawei Technologies Co., Ltd. Device 3714 Then surprise removal 87:00.0 NVME SSD card. The issue is as below. The SSD card is still present. [ 178.610064] pciehp 0000:80:10.0:pcie004: Slot(36): Link Down [ 178.725009] iommu: Removing device 0000:87:00.0 from group 12 [ 178.731278] pciehp 0000:80:10.0:pcie004: Slot(36): Card present [ 180.731129] pcieport 0000:80:10.0: Data Link Layer Link Active not set in 1000 msec [ 182.243128] pciehp 0000:80:10.0:pcie004: Failed to check link status Then lspci -s 80:10.0 -vvv|grep -i SltSta SltSta:Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet- Interlock We can see the card is not present (PresDet-). Data Link Layer State Changed (link down) event reported prior to Presence Detect Changed (card is not present). Current code pciehp_handle_presence_or_link_change() seems have such issue. Any idea to resolve the issue. Thanks, Dongdong .
