Re: [PATCH 1/8] tpm: block messages while suspended

From: Jason Gunthorpe
Date: Thu Jun 13 2019 - 19:31:25 EST


On Thu, Jun 13, 2019 at 11:09:24AM -0700, Stephen Boyd wrote:
> From: Andrey Pronin <apronin@xxxxxxxxxxxx>
>
> Other drivers or userspace may initiate sending a message to the tpm
> while the device itself and the controller of the bus it is on are
> suspended. That may break the bus driver logic.
> Block sending messages while the device is suspended.
>
> Signed-off-by: Andrey Pronin <apronin@xxxxxxxxxxxx>
> Signed-off-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
>
> I don't think this was ever posted before.

Use a real lock.

Jason