Message ID | 20210211122728.31721-11-michael.christie@oracle.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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dkim=none (message not signed) header.d=none;lst.de; dmarc=none action=none header.from=oracle.com; Received: from BYAPR10MB3573.namprd10.prod.outlook.com (2603:10b6:a03:11e::32) by BY5PR10MB4339.namprd10.prod.outlook.com (2603:10b6:a03:20a::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3846.27; Thu, 11 Feb 2021 12:27:50 +0000 Received: from BYAPR10MB3573.namprd10.prod.outlook.com ([fe80::1d86:b9d7:c9ef:ba20]) by BYAPR10MB3573.namprd10.prod.outlook.com ([fe80::1d86:b9d7:c9ef:ba20%7]) with mapi id 15.20.3825.030; Thu, 11 Feb 2021 12:27:50 +0000 From: Mike Christie <michael.christie@oracle.com> To: hch@lst.de, loberman@redhat.com, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, mst@redhat.com, stefanha@redhat.com Cc: Mike Christie <michael.christie@oracle.com>, Felipe Balbi <balbi@kernel.org> Subject: [PATCH 10/14] usb gadget: Convert to new submission API Date: Thu, 11 Feb 2021 06:27:24 -0600 Message-Id: <20210211122728.31721-11-michael.christie@oracle.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210211122728.31721-1-michael.christie@oracle.com> References: <20210211122728.31721-1-michael.christie@oracle.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [73.88.28.6] X-ClientProxiedBy: CH0PR04CA0060.namprd04.prod.outlook.com (2603:10b6:610:77::35) To BYAPR10MB3573.namprd10.prod.outlook.com (2603:10b6:a03:11e::32) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (73.88.28.6) by CH0PR04CA0060.namprd04.prod.outlook.com (2603:10b6:610:77::35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3846.25 via Frontend Transport; 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Series |
[01/14] target: move t_task_cdb initialization
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expand
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diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c index dcce6e2605f5..7acb507946e6 100644 --- a/drivers/usb/gadget/function/f_tcm.c +++ b/drivers/usb/gadget/function/f_tcm.c @@ -1058,11 +1058,9 @@ static void usbg_cmd_work(struct work_struct *work) goto out; } - if (target_submit_cmd(se_cmd, tv_nexus->tvn_se_sess, cmd->cmd_buf, - cmd->sense_iu.sense, cmd->unpacked_lun, 0, - cmd->prio_attr, dir, flags) < 0) - goto out; - + target_submit_cmd(se_cmd, tv_nexus->tvn_se_sess, cmd->cmd_buf, + cmd->sense_iu.sense, cmd->unpacked_lun, 0, + cmd->prio_attr, dir, flags); return; out: @@ -1189,11 +1187,9 @@ static void bot_cmd_work(struct work_struct *work) goto out; } - if (target_submit_cmd(se_cmd, tv_nexus->tvn_se_sess, - cmd->cmd_buf, cmd->sense_iu.sense, cmd->unpacked_lun, - cmd->data_len, cmd->prio_attr, dir, 0) < 0) - goto out; - + target_submit_cmd(se_cmd, tv_nexus->tvn_se_sess, + cmd->cmd_buf, cmd->sense_iu.sense, cmd->unpacked_lun, + cmd->data_len, cmd->prio_attr, dir, 0); return; out:
target_submit_cmd is now only for simple drivers that do their own sync during shutdown and do not use target_stop_session. It will never return a failure, so we can remove that code from the driver. Note: Before these patches target_submit_cmd would never return an error for usb since it does not use target_stop_session. If it did then we would have hit a refcount error here: transport_send_check_condition_and_sense(se_cmd, TCM_UNSUPPORTED_SCSI_OPCODE, 1); transport_generic_free_cmd(&cmd->se_cmd, 0); transport_send_check_condition_and_sense calls queue_status and the driver can sometimes do transport_generic_free_cmd from there via uasp_status_data_cmpl. In that case, the above transport_generic_free_cmd would then hit a refcount error. So that other use of the above error path in the driver is also probably wrong, but someone with the hardware needs to fix that. Cc: Felipe Balbi <balbi@kernel.org> Signed-off-by: Mike Christie <michael.christie@oracle.com> --- drivers/usb/gadget/function/f_tcm.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-)