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[79.144.196.182]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49541eb7372sm14200775e9.13.2026.07.15.14.43.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Jul 2026 14:43:32 -0700 (PDT) From: Jorge Ramirez-Ortiz To: jorge.ramirez@oss.qualcomm.com, alim.akhtar@samsung.com, avri.altman@wdc.com, bvanassche@acm.org, James.Bottomley@HansenPartnership.com, martin.petersen@oracle.com, beanhuo@micron.com, can.guo@oss.qualcomm.com Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, op-tee@lists.trustedfirmware.org, jenswi@kernel.org, sumit.garg@oss.qualcomm.com Subject: [PATCH 1/2] ufs: rpmb: retry power-on UNIT ATTENTION on the RPMB WLUN Date: Wed, 15 Jul 2026 23:39:15 +0200 Message-ID: <20260715214327.1933560-2-jorge.ramirez@oss.qualcomm.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260715214327.1933560-1-jorge.ramirez@oss.qualcomm.com> References: <20260715214327.1933560-1-jorge.ramirez@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: lCCkOj7tUUQ9aslUNAz_FXHzzCBnVYiv X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE1MDIxNyBTYWx0ZWRfX58LIAbh91fLM MukPRme+rJl+nKyMUGkejCLsA8kAuxZmVAtgdco/z9btiQL0onviqV33BwjApnV3T+mkEoWTzUq ATSZqmsGVK5AAVrG68xb5BfZGb76qhtW2IMZpfIoznWR6VhUXbhiNbpdUFVEwHGHqL6Q2Y1J2OS 9NRBeJcligZx+6yuqXVs4nuLs2rIORQ2zwd2ADers3IjC/cpUq1FLYU36toK+KybX1toSAKEmxF wuDOWOmF7b6vvS6/DwA9TNt4aHf276dmroSlzCuwn8PBRG3icB4Oa2xucuxi+6xYHCnEdficOUz RCAXH8HXIe4TcjRAulDm3v4TmPzRoizyJXGpgACbplLHrE3nMgcHmohNKy4vn7fEZL0fv4nPXVh eQE+VNmUvJ7bNO4XKzsKz+SXKWJLxmXfde3La1r9PXPVsVX+tDo63o9HcsiizyvDeOyRP/MK9hJ uxhI0ob2QtwkK82dCKQ== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzE1MDIxNyBTYWx0ZWRfX8FV5lpeDMN9T EBVyr3XlBfDdzzASmFkho91ZljL+sqH2lBySRorFY9VGqanmWH2B4GW8/gxlB9lCqNdFt7EqCLS jGDqMCKqbT7w9MMdyvqqpe/F3KmJDO8= X-Authority-Analysis: v=2.4 cv=LbgMLDfi c=1 sm=1 tr=0 ts=6a57ff07 cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=2lELrtOEK2EaG96G7mOeag==:17 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=EUspDBNiAAAA:8 a=w0io_FmA1e-6CLxyNa8A:9 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-GUID: lCCkOj7tUUQ9aslUNAz_FXHzzCBnVYiv X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-15_05,2026-07-15_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 impostorscore=0 suspectscore=0 adultscore=0 clxscore=1015 phishscore=0 priorityscore=1501 malwarescore=0 lowpriorityscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607150217 After a power cycle, the first command sent to a UFS logical unit completes with CHECK CONDITION and a power-on UNIT ATTENTION (ASC 0x29). The SCSI core reports this to the caller instead of retrying it. For the RPMB well-known LU, that first command is the first RPMB frame sent after boot, so the frame fails. RPMB has no earlier, guaranteed access that could clear the condition beforehand, so this breaks RPMB on every cold boot. Ask the SCSI core to retry the power-on UNIT ATTENTION on the RPMB WLUN so that RPMB works from the very first access after a power cycle. Signed-off-by: Jorge Ramirez-Ortiz --- drivers/ufs/core/ufs-rpmb.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/drivers/ufs/core/ufs-rpmb.c b/drivers/ufs/core/ufs-rpmb.c index ffad049872b9..adbec80cf381 100644 --- a/drivers/ufs/core/ufs-rpmb.c +++ b/drivers/ufs/core/ufs-rpmb.c @@ -40,6 +40,25 @@ struct ufs_rpmb_dev { static int ufs_sec_submit(struct ufs_hba *hba, u16 spsp, void *buffer, size_t len, bool send) { struct scsi_device *sdev = hba->ufs_rpmb_wlun; + struct scsi_sense_hdr sshdr; + /* Retry the power-on UNIT ATTENTION (ASC 0x29); the SCSI core does not. */ + struct scsi_failure failure_defs[] = { + { + .sense = UNIT_ATTENTION, + .asc = SCMD_FAILURE_ASC_ANY, + .ascq = SCMD_FAILURE_ASCQ_ANY, + .allowed = 3, + .result = SAM_STAT_CHECK_CONDITION, + }, + {} + }; + struct scsi_failures failures = { + .failure_definitions = failure_defs, + }; + const struct scsi_exec_args exec_args = { + .sshdr = &sshdr, + .failures = &failures, + }; u8 cdb[12] = { }; cdb[0] = send ? SECURITY_PROTOCOL_OUT : SECURITY_PROTOCOL_IN; @@ -48,7 +67,8 @@ static int ufs_sec_submit(struct ufs_hba *hba, u16 spsp, void *buffer, size_t le put_unaligned_be32(len, &cdb[6]); return scsi_execute_cmd(sdev, cdb, send ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, - buffer, len, /*timeout=*/30 * HZ, 0, NULL); + buffer, len, /*timeout=*/30 * HZ, /*retries=*/0, + &exec_args); } /* UFS RPMB route frames implementation */ -- 2.54.0