From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46066) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eQGTx-0006Fd-IF for qemu-devel@nongnu.org; Sat, 16 Dec 2017 12:42:43 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eQGTt-0000FE-KF for qemu-devel@nongnu.org; Sat, 16 Dec 2017 12:42:41 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:55882 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eQGTt-0000Er-EE for qemu-devel@nongnu.org; Sat, 16 Dec 2017 12:42:37 -0500 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id vBGHfMAR074941 for ; Sat, 16 Dec 2017 12:42:36 -0500 Received: from e33.co.us.ibm.com (e33.co.us.ibm.com [32.97.110.151]) by mx0b-001b2d01.pphosted.com with ESMTP id 2evx0cxtfm-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Sat, 16 Dec 2017 12:42:36 -0500 Received: from localhost by e33.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sat, 16 Dec 2017 10:42:36 -0700 From: Stefan Berger Date: Sat, 16 Dec 2017 12:41:41 -0500 In-Reply-To: <1513446109-9013-1-git-send-email-stefanb@linux.vnet.ibm.com> References: <1513446109-9013-1-git-send-email-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Message-Id: <1513446109-9013-25-git-send-email-stefanb@linux.vnet.ibm.com> Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PULL v1 24/32] tpm-tis: check that at most one TPM device exists List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Stefan Berger From: Marc-Andr=C3=A9 Lureau Signed-off-by: Marc-Andr=C3=A9 Lureau Reviewed-by: Stefan Berger Signed-off-by: Stefan Berger --- 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 0a23203..db101b6 100644 --- a/hw/tpm/tpm_tis.c +++ b/hw/tpm/tpm_tis.c @@ -1061,6 +1061,11 @@ static void tpm_tis_realizefn(DeviceState *dev, Er= ror **errp) { TPMState *s =3D TPM(dev); =20 + if (!tpm_find()) { + error_setg(errp, "at most one TPM device is permitted"); + return; + } + s->be_driver =3D qemu_find_tpm_be(s->backend); if (!s->be_driver) { error_setg(errp, "backend driver with id %s could not be found", --=20 2.5.5