6 Jan
2026
6 Jan
'26
10:40 a.m.
On Tue, Jan 6, 2026 at 10:32 AM Xianwei Zhao xianwei.zhao@amlogic.com wrote:
Hi Bartosz, Could you explain the reproduction method for this problem ?
Please don't top-post on the mailing list.
If you have a pin shared by multiple devices in device-tree, it will now go through a dedicated gpio-shared-proxy driver. It will use a locking mechanism depending on the can_sleep flag of the GPIO controller device - spinlock or mutex. If the flag is wrong - like is the case here - it may happen that we take a spinlock and then descend into pinctrl where a mutex is taken resulting in a lockdep splat.
Bart