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Bottomley" , "Martin K. Petersen" , Bean Huo , Bart Van Assche , Can Guo , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Dinghao Liu Subject: Re: [PATCH] scsi: ufs-bsg: Fix runtime PM imbalance on error From: "Martin K. Petersen" Organization: Oracle Corporation Message-ID: References: <20200522045932.31795-1-dinghao.liu@zju.edu.cn> Date: Tue, 09 Jun 2020 22:11:27 -0400 In-Reply-To: <20200522045932.31795-1-dinghao.liu@zju.edu.cn> (Dinghao Liu's message of "Fri, 22 May 2020 12:59:29 +0800") MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9647 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=44 mlxscore=0 phishscore=0 adultscore=0 bulkscore=0 malwarescore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006100014 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9647 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 priorityscore=1501 lowpriorityscore=0 impostorscore=0 cotscore=-2147483648 suspectscore=44 spamscore=0 bulkscore=0 malwarescore=0 phishscore=0 mlxscore=0 mlxlogscore=999 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006100014 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Avri: Please review! > When ufs_bsg_alloc_desc_buffer() returns an error code, > a pairing runtime PM usage counter decrement is needed > to keep the counter balanced. > > Signed-off-by: Dinghao Liu > --- > drivers/scsi/ufs/ufs_bsg.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/scsi/ufs/ufs_bsg.c b/drivers/scsi/ufs/ufs_bsg.c > index 53dd87628cbe..516a7f573942 100644 > --- a/drivers/scsi/ufs/ufs_bsg.c > +++ b/drivers/scsi/ufs/ufs_bsg.c > @@ -106,8 +106,10 @@ static int ufs_bsg_request(struct bsg_job *job) > desc_op = bsg_request->upiu_req.qr.opcode; > ret = ufs_bsg_alloc_desc_buffer(hba, job, &desc_buff, > &desc_len, desc_op); > - if (ret) > + if (ret) { > + pm_runtime_put_sync(hba->dev); > goto out; > + } > > /* fall through */ > case UPIU_TRANSACTION_NOP_OUT: -- Martin K. Petersen Oracle Linux Engineering