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Diffstat (limited to 'drivers/scsi/scsi_lib.c')
-rw-r--r--drivers/scsi/scsi_lib.c52
1 files changed, 27 insertions, 25 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index edd296f95..5c5954b78 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -185,37 +185,39 @@ void scsi_queue_insert(struct scsi_cmnd *cmd, int reason)
__scsi_queue_insert(cmd, reason, true);
}
+
/**
- * scsi_execute_cmd - insert request and wait for the result
- * @sdev: scsi_device
+ * __scsi_execute - insert request and wait for the result
+ * @sdev: scsi device
* @cmd: scsi command
- * @opf: block layer request cmd_flags
+ * @data_direction: data direction
* @buffer: data buffer
* @bufflen: len of buffer
+ * @sense: optional sense buffer
+ * @sshdr: optional decoded sense header
* @timeout: request timeout in HZ
* @retries: number of times to retry request
- * @args: Optional args. See struct definition for field descriptions
+ * @flags: flags for ->cmd_flags
+ * @rq_flags: flags for ->rq_flags
+ * @resid: optional residual length
*
* Returns the scsi_cmnd result field if a command was executed, or a negative
* Linux error code if we didn't get that far.
*/
-int scsi_execute_cmd(struct scsi_device *sdev, const unsigned char *cmd,
- blk_opf_t opf, void *buffer, unsigned int bufflen,
- int timeout, int retries,
- const struct scsi_exec_args *args)
+int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
+ int data_direction, void *buffer, unsigned bufflen,
+ unsigned char *sense, struct scsi_sense_hdr *sshdr,
+ int timeout, int retries, blk_opf_t flags,
+ req_flags_t rq_flags, int *resid)
{
- static const struct scsi_exec_args default_args;
struct request *req;
struct scsi_cmnd *scmd;
int ret;
- if (!args)
- args = &default_args;
- else if (WARN_ON_ONCE(args->sense &&
- args->sense_len != SCSI_SENSE_BUFFERSIZE))
- return -EINVAL;
-
- req = scsi_alloc_request(sdev->request_queue, opf, args->req_flags);
+ req = scsi_alloc_request(sdev->request_queue,
+ data_direction == DMA_TO_DEVICE ?
+ REQ_OP_DRV_OUT : REQ_OP_DRV_IN,
+ rq_flags & RQF_PM ? BLK_MQ_REQ_PM : 0);
if (IS_ERR(req))
return PTR_ERR(req);
@@ -230,7 +232,8 @@ int scsi_execute_cmd(struct scsi_device *sdev, const unsigned char *cmd,
memcpy(scmd->cmnd, cmd, scmd->cmd_len);
scmd->allowed = retries;
req->timeout = timeout;
- req->rq_flags |= RQF_QUIET;
+ req->cmd_flags |= flags;
+ req->rq_flags |= rq_flags | RQF_QUIET;
/*
* head injection *required* here otherwise quiesce won't work
@@ -246,21 +249,20 @@ int scsi_execute_cmd(struct scsi_device *sdev, const unsigned char *cmd,
if (unlikely(scmd->resid_len > 0 && scmd->resid_len <= bufflen))
memset(buffer + bufflen - scmd->resid_len, 0, scmd->resid_len);
- if (args->resid)
- *args->resid = scmd->resid_len;
- if (args->sense)
- memcpy(args->sense, scmd->sense_buffer, SCSI_SENSE_BUFFERSIZE);
- if (args->sshdr)
+ if (resid)
+ *resid = scmd->resid_len;
+ if (sense && scmd->sense_len)
+ memcpy(sense, scmd->sense_buffer, SCSI_SENSE_BUFFERSIZE);
+ if (sshdr)
scsi_normalize_sense(scmd->sense_buffer, scmd->sense_len,
- args->sshdr);
-
+ sshdr);
ret = scmd->result;
out:
blk_mq_free_request(req);
return ret;
}
-EXPORT_SYMBOL(scsi_execute_cmd);
+EXPORT_SYMBOL(__scsi_execute);
/*
* Wake up the error handler if necessary. Avoid as follows that the error