[PATCH v3 08/48] scsi: NCR5380: Introduce the NCR5380_cmd_priv() function

[Bart Van Assche <bvanassche@acm.org>]

Introduce the NCR5380_cmd_priv() function. This function will allow to
access the SCSI pointer in the next patch with a single statement instead of
two, e.g. as follows:

	struct scsi_pointer *scsi_pointer =
		&NCR5380_cmd_priv(cmd)->scsi_pointer;

Cc: Finn Thain <fthain@telegraphics.com.au>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Cc: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/NCR5380.c | 8 ++++----
 drivers/scsi/NCR5380.h | 5 +++++
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index 55af3e245a92..6fa5e363945a 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -564,7 +564,7 @@ static int NCR5380_queue_command(struct Scsi_Host *instance,
                                  struct scsi_cmnd *cmd)
 {
 	struct NCR5380_hostdata *hostdata = shost_priv(instance);
-	struct NCR5380_cmd *ncmd = scsi_cmd_priv(cmd);
+	struct NCR5380_cmd *ncmd = NCR5380_cmd_priv(cmd);
 	unsigned long flags;
 
 #if (NDEBUG & NDEBUG_NO_WRITE)
@@ -672,7 +672,7 @@ static struct scsi_cmnd *dequeue_next_cmd(struct Scsi_Host *instance)
 static void requeue_cmd(struct Scsi_Host *instance, struct scsi_cmnd *cmd)
 {
 	struct NCR5380_hostdata *hostdata = shost_priv(instance);
-	struct NCR5380_cmd *ncmd = scsi_cmd_priv(cmd);
+	struct NCR5380_cmd *ncmd = NCR5380_cmd_priv(cmd);
 
 	if (hostdata->sensing == cmd) {
 		scsi_eh_restore_cmnd(cmd, &hostdata->ses);
@@ -1690,7 +1690,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
 #endif
 
 	while ((cmd = hostdata->connected)) {
-		struct NCR5380_cmd *ncmd = scsi_cmd_priv(cmd);
+		struct NCR5380_cmd *ncmd = NCR5380_cmd_priv(cmd);
 
 		tmp = NCR5380_read(STATUS_REG);
 		/* We only have a valid SCSI phase when REQ is asserted */
@@ -2206,7 +2206,7 @@ static bool list_del_cmd(struct list_head *haystack,
                          struct scsi_cmnd *needle)
 {
 	if (list_find_cmd(haystack, needle)) {
-		struct NCR5380_cmd *ncmd = scsi_cmd_priv(needle);
+		struct NCR5380_cmd *ncmd = NCR5380_cmd_priv(needle);
 
 		list_del(&ncmd->list);
 		return true;
diff --git a/drivers/scsi/NCR5380.h b/drivers/scsi/NCR5380.h
index 845bd2423e66..88a1bb41b72e 100644
--- a/drivers/scsi/NCR5380.h
+++ b/drivers/scsi/NCR5380.h
@@ -230,6 +230,11 @@ struct NCR5380_cmd {
 	struct list_head list;
 };
 
+static inline struct NCR5380_cmd *NCR5380_cmd_priv(struct scsi_cmnd *cmd)
+{
+	return scsi_cmd_priv(cmd);
+}
+
 #define NCR5380_PIO_CHUNK_SIZE		256
 
 /* Time limit (ms) to poll registers when IRQs are disabled, e.g. during PDMA */