HID: stadia: use open/close to manage workqueue lifecycle

Browse source

Override input device open() and close() callbacks to enable and disable
the force-feedback workqueue item synchronously.

When the input device is opened by userspace, call hid_hw_open() and
enable_work(). When it is closed, disable_work_sync() ensures that any
pending or running work item is cancelled/flushed and no further work
items can be scheduled.

In close(), zero out magnitudes and issue a final report to turn off the
rumble motors on the physical controller before shutting down transport
I/O.

Pack strong and weak magnitudes into a single u32 integer using
WRITE_ONCE() and READ_ONCE() for atomic, lockless updates.

This allows eliminating the manual 'removed' boolean flag and spinlock
completely.

Assisted-by: Antigravity:gemini-3.6-flash
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

...

This commit is contained in:

Dmitry Torokhov 2026-08-03 11:46:34 -07:00 • committed by Jiri Kosina

parent 37f6ca4369

commit ce75845b69

1 changed files with 38 additions and 33 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

71

drivers/hid/hid-google-stadiaff.c

View file