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Petersen" Cc: linux-scsi@vger.kernel.org, Bart Van Assche , "James E.J. Bottomley" , Peter Wang , Avri Altman , Bean Huo Subject: [PATCH v4 27/29] ufs: core: Move code out of ufshcd_wait_for_dev_cmd() Date: Fri, 12 Sep 2025 11:21:48 -0700 Message-ID: <20250912182340.3487688-28-bvanassche@acm.org> X-Mailer: git-send-email 2.51.0.384.g4c02a37b29-goog In-Reply-To: <20250912182340.3487688-1-bvanassche@acm.org> References: <20250912182340.3487688-1-bvanassche@acm.org> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable The ufshcd_dev_cmd_completion() call is useful for some but not for all ufshcd_wait_for_dev_cmd() callers. Hence, remove the ufshcd_dev_cmd_completion() call from ufshcd_wait_for_dev_cmd() and move it past the ufshcd_issue_dev_cmd() calls where appropriate. This makes it easier to detect timeout errors for UPIU frames submitted through the BSG interface. Signed-off-by: Bart Van Assche --- drivers/ufs/core/ufshcd.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 2f815f74aa66..6e346fe59014 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -3259,8 +3259,6 @@ static int ufshcd_wait_for_dev_cmd(struct ufs_hba *= hba, =20 if (likely(time_left)) { err =3D ufshcd_get_tr_ocs(lrbp, NULL); - if (!err) - err =3D ufshcd_dev_cmd_completion(hba, lrbp); } else { err =3D -ETIMEDOUT; dev_dbg(hba->dev, "%s: dev_cmd request timedout, tag %d\n", @@ -3369,6 +3367,7 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba, { const u32 tag =3D hba->reserved_slot; struct scsi_cmnd *cmd =3D ufshcd_tag_to_cmd(hba, tag); + struct ufshcd_lrb *lrbp =3D scsi_cmd_priv(cmd); int err; =20 /* Protects use of hba->reserved_slot. */ @@ -3378,7 +3377,11 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba= , if (unlikely(err)) return err; =20 - return ufshcd_issue_dev_cmd(hba, cmd, tag, timeout); + err =3D ufshcd_issue_dev_cmd(hba, cmd, tag, timeout); + if (err) + return err; + + return ufshcd_dev_cmd_completion(hba, lrbp); } =20 /** @@ -7381,12 +7384,9 @@ static int ufshcd_issue_devman_upiu_cmd(struct ufs= _hba *hba, =20 memset(lrbp->ucd_rsp_ptr, 0, sizeof(struct utp_upiu_rsp)); =20 - /* - * ignore the returning value here - ufshcd_check_query_response is - * bound to fail since dev_cmd.query and dev_cmd.type were left empty. - * read the response directly ignoring all errors. - */ - ufshcd_issue_dev_cmd(hba, cmd, tag, dev_cmd_timeout); + err =3D ufshcd_issue_dev_cmd(hba, cmd, tag, dev_cmd_timeout); + if (err) + return err; =20 /* just copy the upiu response as it is */ memcpy(rsp_upiu, lrbp->ucd_rsp_ptr, sizeof(*rsp_upiu)); @@ -7531,7 +7531,10 @@ int ufshcd_advanced_rpmb_req_handler(struct ufs_hb= a *hba, struct utp_upiu_req *r memset(lrbp->ucd_rsp_ptr, 0, sizeof(struct utp_upiu_rsp)); =20 err =3D ufshcd_issue_dev_cmd(hba, cmd, tag, ADVANCED_RPMB_REQ_TIMEOUT); + if (err) + return err; =20 + err =3D ufshcd_dev_cmd_completion(hba, lrbp); if (!err) { /* Just copy the upiu response as it is */ memcpy(rsp_upiu, lrbp->ucd_rsp_ptr, sizeof(*rsp_upiu));