diff options
Diffstat (limited to 'sys/dev/tpm/tpm_tis_core.c')
| -rw-r--r-- | sys/dev/tpm/tpm_tis_core.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sys/dev/tpm/tpm_tis_core.c b/sys/dev/tpm/tpm_tis_core.c index d8421f8156c9..4159de4daf3b 100644 --- a/sys/dev/tpm/tpm_tis_core.c +++ b/sys/dev/tpm/tpm_tis_core.c @@ -97,6 +97,7 @@ tpmtis_attach(device_t dev) { struct tpm_sc *sc; int result; + int poll = 0; sc = device_get_softc(dev); sc->dev = dev; @@ -105,6 +106,12 @@ tpmtis_attach(device_t dev) sx_init(&sc->dev_lock, "TPM driver lock"); sc->buf = malloc(TPM_BUFSIZE, M_TPM20, M_WAITOK); + resource_int_value("tpm", device_get_unit(dev), "use_polling", &poll); + if (poll != 0) { + device_printf(dev, "Using poll method to get TPM operation status \n"); + goto skip_irq; + } + sc->irq_rid = 0; sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, RF_ACTIVE | RF_SHAREABLE); |