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Bottomley" , "open list" Subject: [PATCH v2 1/1] ufs: mcq: fix incorrectly set queue depth Date: Thu, 16 Feb 2023 09:13:46 -0800 Message-ID: <8840cea4a57b46dabce18acc39afc50ab826330f.1676567593.git.quic_asutoshd@quicinc.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 6ILm0250VvaxEv178_pMJUTq5WNSwrfR X-Proofpoint-ORIG-GUID: 6ILm0250VvaxEv178_pMJUTq5WNSwrfR X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.170.22 definitions=2023-02-16_13,2023-02-16_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 mlxlogscore=999 mlxscore=0 impostorscore=0 priorityscore=1501 adultscore=0 phishscore=0 malwarescore=0 clxscore=1015 lowpriorityscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302160150 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org ufshcd_config_mcq() may change the can_queue value. The current code invokes scsi_add_host() before ufshcd_config_mcq(). So the tags are limited to the old can_queue value. Fix this by invoking scsi_add_host() after ufshcd_config_mcq(). Fixes: 2468da61ea09 ("scsi: ufs: core: mcq: Configure operation and runtime interface") Signed-off-by: Asutosh Das ---- v1 -> v2: - Added Fixes tag - Reworked to handle success case first Reviewed-by: Bart Van Assche Reviewed-by: Manivannan Sadhasivam --- drivers/ufs/core/ufshcd.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 3b3cf78d3b10..3891183897f0 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -8530,7 +8530,9 @@ static int ufshcd_device_init(struct ufs_hba *hba, bool init_dev_params) return ret; if (is_mcq_supported(hba) && !hba->scsi_host_added) { ret = ufshcd_alloc_mcq(hba); - if (ret) { + if (!ret) { + ufshcd_config_mcq(hba); + } else { /* Continue with SDB mode */ use_mcq_mode = false; dev_err(hba->dev, "MCQ mode is disabled, err=%d\n", @@ -8542,10 +8544,10 @@ static int ufshcd_device_init(struct ufs_hba *hba, bool init_dev_params) return ret; } hba->scsi_host_added = true; - } - /* MCQ may be disabled if ufshcd_alloc_mcq() fails */ - if (is_mcq_supported(hba) && use_mcq_mode) + } else if (is_mcq_supported(hba)) { + /* UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH is set */ ufshcd_config_mcq(hba); + } } ufshcd_tune_unipro_params(hba);