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Diffstat (limited to 'include/scsi/scsi_host.h')
-rw-r--r--include/scsi/scsi_host.h17
1 files changed, 2 insertions, 15 deletions
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 0fd4746ee39d..5c58d594126a 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -39,9 +39,6 @@ struct blk_queue_tags;
#define DISABLE_CLUSTERING 0
#define ENABLE_CLUSTERING 1
-#define DISABLE_SG_CHAINING 0
-#define ENABLE_SG_CHAINING 1
-
enum scsi_eh_timer_return {
EH_NOT_HANDLED,
EH_HANDLED,
@@ -136,9 +133,9 @@ struct scsi_host_template {
* the done callback is invoked.
*
* This is called to inform the LLD to transfer
- * cmd->request_bufflen bytes. The cmd->use_sg speciefies the
+ * scsi_bufflen(cmd) bytes. scsi_sg_count(cmd) speciefies the
* number of scatterlist entried in the command and
- * cmd->request_buffer contains the scatterlist.
+ * scsi_sglist(cmd) returns the scatterlist.
*
* return values: see queuecommand
*
@@ -446,15 +443,6 @@ struct scsi_host_template {
unsigned ordered_tag:1;
/*
- * true if the low-level driver can support sg chaining. this
- * will be removed eventually when all the drivers are
- * converted to support sg chaining.
- *
- * Status: OBSOLETE
- */
- unsigned use_sg_chaining:1;
-
- /*
* Countdown for host blocking with no commands outstanding
*/
unsigned int max_host_blocked;
@@ -598,7 +586,6 @@ struct Scsi_Host {
unsigned unchecked_isa_dma:1;
unsigned use_clustering:1;
unsigned use_blk_tcq:1;
- unsigned use_sg_chaining:1;
/*
* Host has requested that no further requests come through for the