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Message-Id: <20181105014552.20262-8-jarkko.sakkinen@linux.intel.com>
Date: Mon, 5 Nov 2018 03:45:40 +0200
From: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To: linux-integrity@...r.kernel.org
Cc: linux-security-module@...r.kernel.org,
James Bottomley <James.Bottomley@...senPartnership.com>,
Tomas Winkler <tomas.winkler@...el.com>,
Tadeusz Struk <tadeusz.struk@...el.com>,
Stefan Berger <stefanb@...ux.vnet.ibm.com>,
Nayna Jain <nayna@...ux.ibm.com>,
Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
Peter Huewe <peterhuewe@....de>,
Jason Gunthorpe <jgg@...pe.ca>, Arnd Bergmann <arnd@...db.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3 07/16] tpm: access command header through struct in tpm_try_transmit()
Instead of accessing fields of the command header through offsets to
the raw buffer, it is a better idea to use the header struct pointer
that is already used elsewhere in the function.
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
---
drivers/char/tpm/tpm-interface.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 0f343407daf8..422e3bb0bd3d 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -190,8 +190,8 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip,
if (bufsiz > TPM_BUFSIZE)
bufsiz = TPM_BUFSIZE;
- count = be32_to_cpu(*((__be32 *) (buf + 2)));
- ordinal = be32_to_cpu(*((__be32 *) (buf + 6)));
+ count = be32_to_cpu(header->length);
+ ordinal = be32_to_cpu(header->return_code);
if (count == 0)
return -ENODATA;
if (count > bufsiz) {
--
2.19.1
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