From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELs1C+RsOnNWf7ml3C5DZ1E+MxBpTKGvvTDue3sBai5SLC87I8vdadXcVZuhoj5juZMIHH0a ARC-Seal: i=1; a=rsa-sha256; t=1520268992; cv=none; d=google.com; s=arc-20160816; b=b0zsgralyQ6BCb2bNbz82Y7/mJPUxs6lAX4/+NWrPU8nd6H/QwLGAirne60DEd68ZU McvcoabL/jLT8g6ZLnwmDiixNkKr3HVVB0x87hv5p+fbYei7BWmh+wvmOTI0REk8mbqn KsW3jRoTvew2w+DUuWn4KRC0JzE5GIAqOukZD+xP3FVvtVDp6J8V1+/zRK+5E1hKMEzt mKwTaUdvx8QkAt+FBlKPLJnh9ELKvWcJ69rO80viA2GMnHVAkjv9GL0glJ6PUrmGFVKO QdthGsM/Iez1JUYt+pyQgwQTrR6Qbj80rOfBNGg5uoPLDFErux1Do3lSjCUjSvehVKfZ kPAQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:message-id:date:subject:cc:to:from :arc-authentication-results; bh=bHMPeEj0//l/ks4Dln0NUjIK9sgUzoTUIdLtOvl6KJk=; b=MVeCEsPbdgocyKpSzHfpeRYMmIYq1ep7Jk1eVNuteZcYgmH/X1p8r64WFlNjwYyjXT FV17zXzIho838M6HnxEPVdI5fo4+45pYu+5XrL/6LB7ABQg3VTA+epN8nFGUSE99Xamf iY/0aYr0mabfORko+H3lbpZjzUTrhgW2MfFaU6ddsms2z0Gf1yjOfNF54w8eOab3onbZ VQkitvRbexBG/JF+kAvfLl0KEuuV4WS8upO6d0FWtgCUDlk7VdaBl3wDFgQOGdpJejaP tJENMTIP5rKzcDZdnngpTx2EHabbPo4y7nNOdzZ4PcR+hgt3DgcyZyMKIZpo4cp+UZBY pTxw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of jarkko.sakkinen@intel.com designates 134.134.136.65 as permitted sender) smtp.mailfrom=jarkko.sakkinen@intel.com Authentication-Results: mx.google.com; spf=pass (google.com: domain of jarkko.sakkinen@intel.com designates 134.134.136.65 as permitted sender) smtp.mailfrom=jarkko.sakkinen@intel.com X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.47,427,1515484800"; d="scan'208";a="35627909" From: Jarkko Sakkinen To: linux-integrity@vger.kernel.org Cc: linux-security-module@vger.kernel.org, keyrings@vger.kernel.org, Jarkko Sakkinen , Peter Huewe , Jason Gunthorpe , Arnd Bergmann , Greg Kroah-Hartman , linux-kernel@vger.kernel.org (open list) Subject: [PATCH v3 2/5] tpm: migrate tpm2_shutdown() to use struct tpm_buf Date: Mon, 5 Mar 2018 18:56:11 +0200 Message-Id: <20180305165614.5469-3-jarkko.sakkinen@linux.intel.com> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180305165614.5469-1-jarkko.sakkinen@linux.intel.com> References: <20180305165614.5469-1-jarkko.sakkinen@linux.intel.com> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1594108954042776434?= X-GMAIL-MSGID: =?utf-8?q?1594117578975772535?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: In order to make struct tpm_buf the first class object for constructing TPM commands, migrate tpm2_shutdown() to use it. In addition, removed the klog entry when tpm_transmit_cmd() fails because tpm_tansmit_cmd() already prints an error message. Signed-off-by: Jarkko Sakkinen --- drivers/char/tpm/tpm2-cmd.c | 44 ++++++++++++-------------------------------- 1 file changed, 12 insertions(+), 32 deletions(-) diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c index 89a5397b18d2..abe6ef4a7a0b 100644 --- a/drivers/char/tpm/tpm2-cmd.c +++ b/drivers/char/tpm/tpm2-cmd.c @@ -27,10 +27,6 @@ enum tpm2_session_attributes { TPM2_SA_CONTINUE_SESSION = BIT(0), }; -struct tpm2_startup_in { - __be16 startup_type; -} __packed; - struct tpm2_get_tpm_pt_in { __be32 cap_id; __be32 property_id; @@ -55,7 +51,6 @@ struct tpm2_get_random_out { } __packed; union tpm2_cmd_params { - struct tpm2_startup_in startup_in; struct tpm2_get_tpm_pt_in get_tpm_pt_in; struct tpm2_get_tpm_pt_out get_tpm_pt_out; struct tpm2_get_random_in getrandom_in; @@ -410,11 +405,8 @@ void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle, int rc; rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_FLUSH_CONTEXT); - if (rc) { - dev_warn(&chip->dev, "0x%08x was not flushed, out of memory\n", - handle); + if (rc) return; - } tpm_buf_append_u32(&buf, handle); @@ -760,40 +752,28 @@ ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id, u32 *value, } EXPORT_SYMBOL_GPL(tpm2_get_tpm_pt); -#define TPM2_SHUTDOWN_IN_SIZE \ - (sizeof(struct tpm_input_header) + \ - sizeof(struct tpm2_startup_in)) - -static const struct tpm_input_header tpm2_shutdown_header = { - .tag = cpu_to_be16(TPM2_ST_NO_SESSIONS), - .length = cpu_to_be32(TPM2_SHUTDOWN_IN_SIZE), - .ordinal = cpu_to_be32(TPM2_CC_SHUTDOWN) -}; - /** * tpm2_shutdown() - send shutdown command to the TPM chip * + * In places where shutdown command is sent there's no much we can do except + * print the error code on a system failure. + * * @chip: TPM chip to use. * @shutdown_type: shutdown type. The value is either * TPM_SU_CLEAR or TPM_SU_STATE. */ void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type) { - struct tpm2_cmd cmd; + struct tpm_buf buf; int rc; - cmd.header.in = tpm2_shutdown_header; - cmd.params.startup_in.startup_type = cpu_to_be16(shutdown_type); - - rc = tpm_transmit_cmd(chip, NULL, &cmd, sizeof(cmd), 0, 0, - "stopping the TPM"); - - /* In places where shutdown command is sent there's no much we can do - * except print the error code on a system failure. - */ - if (rc < 0 && rc != -EPIPE) - dev_warn(&chip->dev, "transmit returned %d while stopping the TPM", - rc); + rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_SHUTDOWN); + if (rc) + return; + tpm_buf_append_u16(&buf, shutdown_type); + tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE, 0, 0, + "stopping the TPM"); + tpm_buf_destroy(&buf); } /* -- 2.15.1