From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joe Perches Subject: Re: [PATCH v2] tpm: vtpm_proxy: Suppresse error logging when in closed state Date: Thu, 25 May 2017 14:53:05 -0700 Message-ID: <1495749185.29207.21.camel@perches.com> References: <1495748360-26558-1-git-send-email-stefanb@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1495748360-26558-1-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tpmdd-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Stefan Berger , jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org, tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Cc: linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: tpmdd-devel@lists.sourceforge.net On Thu, 2017-05-25 at 17:39 -0400, Stefan Berger wrote: > Suppress the error logging when the core TPM driver sends commands > to the VTPM proxy driver and -EPIPE is returned in case the VTPM > proxy driver is 'closed' (closed anonymous file descriptor). This > error code is only returned by the send function and by tpm_transmit > when the VTPM proxy driver is being used. > > Signed-off-by: Stefan Berger > --- > drivers/char/tpm/tpm-interface.c | 4 ++-- > drivers/char/tpm/tpm2-cmd.c | 2 +- > 2 files changed, 3 insertions(+), 3 deletions(-) > > diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c > index d711186..4826fcf 100644 > --- a/drivers/char/tpm/tpm-interface.c > +++ b/drivers/char/tpm/tpm-interface.c > @@ -429,11 +429,11 @@ ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space, > goto out; > > rc = chip->ops->send(chip, (u8 *) buf, count); > - if (rc < 0) { > + if (rc < 0 && rc != -EPIPE) > dev_err(&chip->dev, > "tpm_transmit: tpm_send: error %d\n", rc); > + if (rc < 0) > goto out; Perhaps this would read better as if (rc < 0) { if (rc != -EPIPE) dev_err(etc...); goto out; } though for etc, perhaps dev_err(&chip->dev, "%s: %tpm_send: error %d\n", __func__, rc); ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot