From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarkko Sakkinen Date: Mon, 23 Oct 2017 13:44:01 +0000 Subject: Re: [PATCH 2/2] xen-tpmfront: Combine two condition checks into one statement in vtpm_send() Message-Id: <20171023134401.n5mx6f6gjfhxtnxu@linux.intel.com> List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: SF Markus Elfring Cc: linux-integrity@vger.kernel.org, Jason Gunthorpe , Peter =?iso-8859-1?Q?H=FCwe?= , LKML , kernel-janitors@vger.kernel.org On Sun, Oct 22, 2017 at 01:30:46PM +0200, SF Markus Elfring wrote: > From: Markus Elfring > Date: Sun, 22 Oct 2017 13:15:16 +0200 > > A return was performed with the same error code after two condition checks. > Thus use a single statement instead. > > Signed-off-by: Markus Elfring > --- > drivers/char/tpm/xen-tpmfront.c | 5 +---- > 1 file changed, 1 insertion(+), 4 deletions(-) > > diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen-tpmfront.c > index 873a5631937a..0d02743e7a87 100644 > --- a/drivers/char/tpm/xen-tpmfront.c > +++ b/drivers/char/tpm/xen-tpmfront.c > @@ -82,10 +82,7 @@ static int vtpm_send(struct tpm_chip *chip, u8 *buf, size_t count) > u32 ordinal; > unsigned long duration; > > - if (offset > PAGE_SIZE) > - return -EINVAL; > - > - if (offset + count > PAGE_SIZE) > + if (offset > PAGE_SIZE || offset + count > PAGE_SIZE) > return -EINVAL; > > /* Wait for completion of any existing command or cancellation */ > -- > 2.14.2 > This is fine. Reviewed-by: Jarkko Sakkinen /Jarkko