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-rw-r--r--include/scsi/scsi_cmnd.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 91bd749a02f7..dafde3d764d0 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -143,6 +143,12 @@ struct scsi_cmnd {
unsigned char tag; /* SCSI-II queued command tag */
};
+/* Variant of blk_mq_rq_from_pdu() that verifies the type of its argument. */
+static inline struct request *scsi_cmd_to_rq(struct scsi_cmnd *scmd)
+{
+ return blk_mq_rq_from_pdu(scmd);
+}
+
/*
* Return the driver private allocation behind the command.
* Only works if cmd_size is set in the host template.
@@ -204,7 +210,7 @@ static inline int scsi_get_resid(struct scsi_cmnd *cmd)
for_each_sg(scsi_sglist(cmd), sg, nseg, __i)
static inline int scsi_sg_copy_from_buffer(struct scsi_cmnd *cmd,
- void *buf, int buflen)
+ const void *buf, int buflen)
{
return sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),
buf, buflen);