On Sat, 15 Jun 2019 12:31 -07:00, Valdis Klētnieks <valdis.kletnieks@xxxxxx> wrote:
On Fri, 14 Jun 2019 15:40:59 -0700, "Alexander Ivanov" said:(Adding likely knowledgeable people to the recipients)Jean, Andy, Linus: The situation thus far: Alexander has a system with this GPIO on it:> lspci -vvvnns 1f.1> 00:1f.1 Memory controller [0580]: Intel Corporation Device [8086:9d20] (rev 21)> Subsystem: Gigabyte Technology Co., Ltd Device [1458:1000]> Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-> Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-> Latency: 0> Region 0: Memory at 7d000000 (64-bit, non-prefetchable) [size=16M]The obvious first thing to try was:diff --git a/drivers/gpio/gpio-pch.c b/drivers/gpio/gpio-pch.cindex 1d99293096f2..19884b5b2a74 100644--- a/drivers/gpio/gpio-pch.c+++ b/drivers/gpio/gpio-pch.c@@ -439,6 +439,7 @@ static SIMPLE_DEV_PM_OPS(pch_gpio_pm_ops, pch_gpio_suspend, pch_gpio_resume);static const struct pci_device_id pch_gpio_pcidev_id[] = {{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x8803) },+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9d20) },{ PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8014) },{ PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8043) },{ PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x8803) },and that died thusly when attempted to load:[ 105.965846] pci 0000:00:1f.1: [8086:9d20] type 00 class 0x058000[ 105.965928] pci 0000:00:1f.1: reg 0x10: [mem 0xfd000000-0xfdffffff 64bit][ 105.967084] pci 0000:00:1f.1: BAR 0: assigned [mem 0x7d000000-0x7dffffff 64bit][ 105.978037] pch_gpio 0000:00:1f.1: pch_gpio_probe : pci_iomap FAILED[ 105.978194] pch_gpio 0000:00:1f.1: pch_gpio_probe Failed returns -12[ 105.978317] pch_gpio: probe of 0000:00:1f.1 failed with error -12So obviously an older kernel. Not sure what release Alexander is on, buta 'git log' against this week's linux-next tree didn't show anything that wasan obvious fix for a similar problem.
This is fedora 25 running 4.8.6 kernel.
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