> -----Original Message----- > From: Fabio Estevam <festevam@xxxxxxxxx> > Sent: Saturday, October 16, 2021 2:35 AM > To: Richard Zhu <hongxing.zhu@xxxxxxx> > Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>; Bjorn Helgaas > <bhelgaas@xxxxxxxxxx>; Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>; > linux-pci@xxxxxxxxxxxxxxx; dl-linux-imx <linux-imx@xxxxxxx>; moderated > list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE > <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>; linux-kernel > <linux-kernel@xxxxxxxxxxxxxxx>; Sascha Hauer <kernel@xxxxxxxxxxxxxx> > Subject: Re: [RESEND v2 3/5] PCI: imx6: Fix the regulator dump when link > never came up > > Hi Richard, > > On Fri, Oct 15, 2021 at 3:32 AM Richard Zhu <hongxing.zhu@xxxxxxx> wrote: > > > > When PCIe PHY link never came up and vpcie regulator is present, there > > would be following dump when try to put the regulator. > > Disable this regulator to fix this dump when link never came up. > > > > imx6q-pcie 33800000.pcie: Phy link never came up > > imx6q-pcie: probe of 33800000.pcie failed with error -110 > > ------------[ cut here ]------------ > > WARNING: CPU: 3 PID: 119 at drivers/regulator/core.c:2256 > _regulator_put.part.0+0x14c/0x158 > > Modules linked in: > > CPU: 3 PID: 119 Comm: kworker/u8:2 Not tainted > 5.13.0-rc7-next-20210625-94710-ge4e92b2588a3 #10 > > Hardware name: FSL i.MX8MM EVK board (DT) > > Workqueue: events_unbound async_run_entry_fn > > pstate: 80000005 (Nzcv daif -PAN -UAO -TCO BTYPE=--) > > pc : _regulator_put.part.0+0x14c/0x158 > > lr : regulator_put+0x34/0x48 > > sp : ffff8000122ebb30 > > x29: ffff8000122ebb30 x28: ffff800011be7000 x27: 0000000000000000 > > x26: 0000000000000000 x25: 0000000000000000 x24: ffff00000025f2bc > > x23: ffff00000025f2c0 x22: ffff00000025f010 x21: ffff8000122ebc18 > > x20: ffff800011e3fa60 x19: ffff00000375fd80 x18: 0000000000000010 > > x17: 000000040044ffff x16: 00400032b5503510 x15: > 0000000000000108 > > x14: ffff0000003cc938 x13: 00000000ffffffea x12: 0000000000000000 > > x11: 0000000000000000 x10: ffff80001076ba88 x9 : ffff80001076a540 > > x8 : ffff00000025f2c0 x7 : ffff0000001f4450 x6 : ffff000000176cd8 > > x5 : ffff000003857880 x4 : 0000000000000000 x3 : ffff800011e3fe30 > > x2 : ffff0000003cc4c0 x1 : 0000000000000000 x0 : 0000000000000001 > > Call trace: > > _regulator_put.part.0+0x14c/0x158 > > regulator_put+0x34/0x48 > > devm_regulator_release+0x10/0x18 > > release_nodes+0x38/0x60 > > devres_release_all+0x88/0xd0 > > really_probe+0xd0/0x2e8 > > __driver_probe_device+0x74/0xd8 > > driver_probe_device+0x7c/0x108 > > __device_attach_driver+0x8c/0xd0 > > bus_for_each_drv+0x74/0xc0 > > __device_attach_async_helper+0xb4/0xd8 > > async_run_entry_fn+0x30/0x100 > > process_one_work+0x19c/0x320 > > worker_thread+0x48/0x418 > > kthread+0x14c/0x158 > > ret_from_fork+0x10/0x18 > > ---[ end trace 3664ca4a50ce849b ]--- > > > > Signed-off-by: Richard Zhu <hongxing.zhu@xxxxxxx> > > I am seeing this on imx6 too. When you send a v2, after addressing Lucas' > comments, please add a Fixes tag/ [Richard Zhu] Okay, no problem. Thanks. BR Richard
