From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Gunthorpe Subject: Re: [PATCH 1/8] tpm: block messages while suspended Date: Thu, 13 Jun 2019 20:26:13 -0300 Message-ID: <20190613232613.GH22901@ziepe.ca> References: <20190613180931.65445-1-swboyd@chromium.org> <20190613180931.65445-2-swboyd@chromium.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20190613180931.65445-2-swboyd@chromium.org> Sender: linux-kernel-owner@vger.kernel.org To: Stephen Boyd Cc: Peter Huewe , Jarkko Sakkinen , Andrey Pronin , linux-kernel@vger.kernel.org, Arnd Bergmann , Greg Kroah-Hartman , linux-integrity@vger.kernel.org, devicetree@vger.kernel.org, Duncan Laurie , Guenter Roeck List-Id: devicetree@vger.kernel.org On Thu, Jun 13, 2019 at 11:09:24AM -0700, Stephen Boyd wrote: > From: Andrey Pronin > > 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 > Signed-off-by: Stephen Boyd > > I don't think this was ever posted before. Use a real lock. Jason