On Thu, Oct 01, 2020 at 11:09:23AM -0700, James Bottomley wrote: > If a TIS TPM doesn't have legacy cycles, any write to the interrupt > registers is ignored unless a locality is active. This means even to > set up the interrupt vectors a locality must first be activated. Fix > this by activating the 0 locality in the interrupt probe setup. > > Since the TPM_EOI signalling also requires an active locality, the > interrupt routine cannot end an interrupt if the locality is released. > This can lead to a situation where the TPM goes command ready after > locality release and since the interrupt cannot be ended it refires > continuously. Fix this by disabling all interrupts except locality > change when a locality is released (this only fires when a locality > becomes active, meaning the TPM_EOI should work). > > Finally, since we now disable all status based interrupts in the > locality release, they must be re-enabled before waiting to check the > condition, so add interrupt enabling to the status wait. > > Signed-off-by: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> > > --- > > v2: renamed functions Ditto. /Jarkko
