diff options
| author | Lino Sanfilippo <l.sanfilippo@kunbus.com> | 2022-11-24 14:55:35 +0100 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko@kernel.org> | 2023-04-24 16:15:53 +0300 |
| commit | 0e069265bce5a40c4eee52e2364bbbd4dabee94a (patch) | |
| tree | 3a1c737ca42fcad53fb883453c22dc1c51f472d2 /drivers/char/tpm | |
| parent | 0c7e66e5fd69bf21034c9a9b081d7de7c3eb2cea (diff) | |
| download | linux-0e069265bce5a40c4eee52e2364bbbd4dabee94a.tar.gz | |
tpm, tpm_tis: Claim locality in interrupt handler
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@kunbus.com>
Tested-by: Michael Niewöhner <linux@mniewoehner.de>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Diffstat (limited to 'drivers/char/tpm')
| -rw-r--r-- | drivers/char/tpm/tpm_tis_core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c index bd443cf5a9f0d..fda4ed61d0a4f 100644 --- a/drivers/char/tpm/tpm_tis_core.c +++ b/drivers/char/tpm/tpm_tis_core.c @@ -776,7 +776,9 @@ static irqreturn_t tis_int_handler(int dummy, void *dev_id) wake_up_interruptible(&priv->int_queue); /* Clear interrupts handled with TPM_EOI */ + tpm_tis_request_locality(chip, 0); rc = tpm_tis_write32(priv, TPM_INT_STATUS(priv->locality), interrupt); + tpm_tis_relinquish_locality(chip, 0); if (rc < 0) return IRQ_NONE; |