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Mon, 1 Mar 2021 13:13:21 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 82829A4040; Mon, 1 Mar 2021 13:13:20 +0000 (GMT) Received: from osiris (unknown [9.171.28.2]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Mon, 1 Mar 2021 13:13:20 +0000 (GMT) Date: Mon, 1 Mar 2021 14:13:19 +0100 From: Heiko Carstens To: Wang Qing Cc: Cornelia Huck , Eric Farman , Halil Pasic , Vineeth Vijayan , Peter Oberparleiter , Vasily Gorbik , Christian Borntraeger , linux-s390@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] s390: cio: Return -EFAULT if copy_to_user() fails Message-ID: References: <1614600093-13992-1-git-send-email-wangqing@vivo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1614600093-13992-1-git-send-email-wangqing@vivo.com> X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.761 definitions=2021-03-01_06:2021-03-01,2021-03-01 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 spamscore=0 suspectscore=0 adultscore=0 mlxlogscore=920 priorityscore=1501 lowpriorityscore=0 clxscore=1011 bulkscore=0 mlxscore=0 phishscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2103010108 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 01, 2021 at 08:01:33PM +0800, Wang Qing wrote: > The copy_to_user() function returns the number of bytes remaining to be > copied, but we want to return -EFAULT if the copy doesn't complete. > > Signed-off-by: Wang Qing > --- > drivers/s390/cio/vfio_ccw_ops.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) Applied, thanks!