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[Qemu-devel] [PATCH v2 24/28] tpm-tis: check that at most one TPM device
From: |
Marc-André Lureau |
Subject: |
[Qemu-devel] [PATCH v2 24/28] tpm-tis: check that at most one TPM device exists |
Date: |
Mon, 6 Nov 2017 19:39:21 +0100 |
Signed-off-by: Marc-André Lureau <address@hidden>
---
hw/tpm/tpm_tis.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/hw/tpm/tpm_tis.c b/hw/tpm/tpm_tis.c
index 175785b9c4..dccc56ab09 100644
--- a/hw/tpm/tpm_tis.c
+++ b/hw/tpm/tpm_tis.c
@@ -1057,6 +1057,11 @@ static void tpm_tis_realizefn(DeviceState *dev, Error
**errp)
{
TPMState *s = TPM(dev);
+ if (!tpm_find()) {
+ error_setg(errp, "at most one TPM device is permitted");
+ return;
+ }
+
s->be_driver = qemu_find_tpm_be(s->backend);
if (!s->be_driver) {
error_setg(errp, "backend driver with id %s could not be found",
--
2.15.0.rc0.40.gaefcc5f6f
- [Qemu-devel] [PATCH v2 15/28] tpm-passthrough: workaround a possible race, (continued)
- [Qemu-devel] [PATCH v2 15/28] tpm-passthrough: workaround a possible race, Marc-André Lureau, 2017/11/06
- [Qemu-devel] [PATCH v2 16/28] tpm-tis: simplify header inclusion, Marc-André Lureau, 2017/11/06
- [Qemu-devel] [PATCH v2 17/28] tpm: rename qemu_find_tpm() -> qemu_find_tpm_be(), Marc-André Lureau, 2017/11/06
- [Qemu-devel] [PATCH v2 18/28] tpm: lookup the the TPM interface instead of TIS device, Marc-André Lureau, 2017/11/06
- [Qemu-devel] [PATCH v2 19/28] tpm: add TPM interface to lookup TPM version, Marc-André Lureau, 2017/11/06
- [Qemu-devel] [PATCH v2 20/28] tpm: add tpm_cmd_get_size() to tpm_util, Marc-André Lureau, 2017/11/06
- [Qemu-devel] [PATCH v2 21/28] acpi: change TPM TIS data conditions, Marc-André Lureau, 2017/11/06
- [Qemu-devel] [PATCH v2 22/28] tpm-emulator: add a FIXME comment about blocking cancel, Marc-André Lureau, 2017/11/06
- [Qemu-devel] [PATCH v2 23/28] tpm-tis: remove redundant 'tpm_tis:' in error messages, Marc-André Lureau, 2017/11/06
- [Qemu-devel] [PATCH v2 24/28] tpm-tis: check that at most one TPM device exists,
Marc-André Lureau <=
- [Qemu-devel] [PATCH v2 25/28] tpm-emulator: protect concurrent ctrl_chr access, Marc-André Lureau, 2017/11/06
[Qemu-devel] [PATCH v2 26/28] qdev: add DEFINE_PROP_TPMBE, Marc-André Lureau, 2017/11/06
[Qemu-devel] [PATCH v2 27/28] tpm-tis: use DEFINE_PROP_TPMBE, Marc-André Lureau, 2017/11/06