Dear Bartosz,
Thank you for your quick reply.
Am 21.02.25 um 21:53 schrieb Bartosz Golaszewski:
On Fri, Feb 21, 2025 at 9:40 PM Paul Menzel <pmenzel@xxxxxxxxxxxxx> wrote:
On the Intel Kaby Lake Dell XPS 13 9360, Linux 6.14-rc3+ with your
commit 9d846b1aebbe (gpiolib: check the return value of
gpio_chip::get_direction()) prints 52 new warnings:
$ dmesg
[…]
[ 0.000000] DMI: Dell Inc. XPS 13 9360/0596KF, BIOS 2.21.0 06/02/2022
[…]
[ 5.148927] pci 0000:00:1d.0: PCI bridge to [bus 3c]
[ 5.150955] gpio gpiochip0: gpiochip_add_data_with_key: get_direction failed: -22
[50 times the same]
[ 5.151639] gpio gpiochip0: gpiochip_add_data_with_key: get_direction failed: -22
[ 5.151768] ACPI: PCI: Interrupt link LNKA configured for IRQ 11
[…]
$ lspci -nn -k -s 1d.0
00:1d.0 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port #9 [8086:9d18] (rev f1)
Subsystem: Dell Device [1028:075b]
Kernel driver in use: pcieport
Judging from the commit messages, this is expected. But what should a
user seeing this do now?
Also, it probably should not be applied to the stable series, as people
might monitor warnings and new warnings in stable series might be
unexpected.
[1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9d846b1aebbe488f245f1aa463802ff9c34cc078
What GPIO driver is it using? It's likely that it's not using the
provider API correctly and this change uncovered it, I'd like to take
a look at it and fix it.
How do I find out? The commands below do not return anything.
$ lsmod | grep gpio
$ lspci -nn | grep -i gpio
$ sudo dmesg | grep gpio
[ 5.150955] gpio gpiochip0: gpiochip_add_data_with_key:
get_direction failed: -22
[Just these lines match.]
Kind regards,
Paul
