Re: [PATCH 0/2] staging: nvec_power: quiesce EC queries for system suspend

[Marc Dietrich]

Hello Gustavo,

thanks for your patches.

On Thu, 12 Mar 2026, Gustavo Arantes wrote:
> nvec_power still issues EC queries asynchronously and keeps work queued
> across system sleep. This series first serializes the driver's EC
> requests, then adds PM hooks so the remaining work items are quiesced
> while the parent NVEC controller is suspended.

Reading out the battery info during boot takes some time as far as I 
remember, but I haven't tested your patches yet. Is the use of sync 
writes really required in order to realize a clean suspend?

AFAIK, the machine doesn't support suspend currently, partily due to 
missing atomic writes for the EC. Building the driver as a removable 
module may be enough to test the change though.
Are you able to test the change on real hardware?

Best wishes,

Marc

> Patch 1 exports a small core parser helper, moves the battery metadata
> queries into a worker, and switches nvec_power over to synchronous EC
> requests.
>
> Patch 2 tracks the suspend state per instance, prevents new work from
> being queued during suspend, and restarts the polling and metadata work
> on resume.
>
> Gustavo Arantes (2):
>  staging: nvec_power: make EC queries synchronous
>  staging: nvec_power: stop EC queries during system suspend
>
> drivers/staging/nvec/nvec.c       |   7 +-
> drivers/staging/nvec/nvec.h       |   2 +
> drivers/staging/nvec/nvec_power.c | 122 +++++++++++++++++++++++++-----
> 3 files changed, 111 insertions(+), 20 deletions(-)
>
>
> base-commit: ad6bb64332bb4297110950769ad5af52791e33a2
> --
> 2.53.0