Quoting Jason Gunthorpe (2019-06-13 16:26:13) > 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. > To make sure the bit is tested under a lock so that suspend/resume can't update the bit in parallel?
