Hi Xiaolei: Thanks for your patch. The similar issue had been fixed by another mail-loop. Issued by Mark and Fabio. https://lkml.org/lkml/2023/7/3/816 https://patchwork.kernel.org/project/linux-pci/patch/20230704122635.1362156-1-festevam@xxxxxxxxx/ Best Regards Richard Zhu > -----Original Message----- > From: Xiaolei Wang <xiaolei.wang@xxxxxxxxxxxxx> > Sent: 2023年7月5日 9:06 > To: Hongxing Zhu <hongxing.zhu@xxxxxxx>; l.stach@xxxxxxxxxxxxxx; > kw@xxxxxxxxx; bhelgaas@xxxxxxxxxx; shawnguo@xxxxxxxxxx; > s.hauer@xxxxxxxxxxxxxx; kernel@xxxxxxxxxxxxxx; festevam@xxxxxxxxx; > dl-linux-imx <linux-imx@xxxxxxx> > Cc: linux-pci@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; > linux-kernel@xxxxxxxxxxxxxxx > Subject: [PATCH] PCI: imx6: Add deinit for imx pci > > Commit da56a1bfbab5("PCI: dwc: Wait for link up only if link is started") adds > the judgment on the return value of dw_pcie_wait_for_link(). When no pci > device is connected and pci does not appear link up, the link will be stopped at > this time. Run host_deinit, so add host_deinit callback function. > > WARNING: CPU: 2 PID: 70 at drivers/regulator/core.c:2398 > _regulator_put.part.0+0x17c/0x194 > Modules linked in: > CPU: 2 PID: 70 Comm: kworker/u8:4 Not tainted > 6.4.0-rc1-00001-gda56a1bfbab5-dirty #22 > Hardware name: NXP i.MX8MQ EVK (DT) > Call trace: > _regulator_put.part.0+0x17c/0x194 > regulator_put+0x3c/0x54 > devm_regulator_release+0x14/0x20 > release_nodes+0x8c/0x13c > devres_release_all+0x8c/0x108 > device_unbind_cleanup+0x18/0x68 > really_probe+0xe4/0x27c > __driver_probe_device+0x78/0x12c > driver_probe_device+0x3c/0x118 > __device_attach_driver+0xb8/0xf8 > bus_for_each_drv+0x84/0xe4 > __device_attach_async_helper+0xc0/0xe4 > async_run_entry_fn+0x34/0xe0 > process_one_work+0x290/0x5c4 > worker_thread+0x4c/0x408 > kthread+0x128/0x134 > ret_from_fork+0x10/0x20 > > Signed-off-by: Xiaolei Wang <xiaolei.wang@xxxxxxxxxxxxx> > --- > drivers/pci/controller/dwc/pci-imx6.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/pci/controller/dwc/pci-imx6.c > b/drivers/pci/controller/dwc/pci-imx6.c > index 52906f999f2b..e4942bd2598d 100644 > --- a/drivers/pci/controller/dwc/pci-imx6.c > +++ b/drivers/pci/controller/dwc/pci-imx6.c > @@ -1039,6 +1039,7 @@ static void imx6_pcie_host_exit(struct dw_pcie_rp > *pp) > > static const struct dw_pcie_host_ops imx6_pcie_host_ops = { > .host_init = imx6_pcie_host_init, > + .host_deinit = imx6_pcie_host_exit, > }; > > static const struct dw_pcie_ops dw_pcie_ops = { > -- > 2.25.1
