From: Lino Sanfilippo <l.sanfilippo@xxxxxxxxxx> Writing the TPM_INT_STATUS register in the interrupt handler to clear the interrupts only has effect if a locality is held. Since this is not guaranteed at the time the interrupt is fired, claim the locality explicitly in the handler. Signed-off-by: Lino Sanfilippo <l.sanfilippo@xxxxxxxxxx> --- drivers/char/tpm/tpm_tis_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c index 8b5aa4fdbe92..e5edf745fb23 100644 --- a/drivers/char/tpm/tpm_tis_core.c +++ b/drivers/char/tpm/tpm_tis_core.c @@ -753,7 +753,9 @@ static irqreturn_t tis_int_handler(int dummy, void *dev_id) wake_up_interruptible(&priv->int_queue); /* Clear interrupts handled with TPM_EOI */ + request_locality(chip, 0); rc = tpm_tis_write32(priv, TPM_INT_STATUS(priv->locality), interrupt); + release_locality(chip, 0); if (rc < 0) return IRQ_NONE; -- 2.36.1
