[SCSI] pm8001: set SSC down-spreading only to get less errors on some 6G device.

[safe/jmp/linux-2.6] / drivers / scsi / 53c700.c

diff --git a/drivers/scsi/53c700.c b/drivers/scsi/53c700.c
index f5a9add..9f4a911 100644 (file)
--- a/drivers/scsi/53c700.c
+++ b/drivers/scsi/53c700.c
@@ -175,7 +175,7 @@ STATIC void NCR_700_chip_reset(struct Scsi_Host *host);
 STATIC int NCR_700_slave_alloc(struct scsi_device *SDpnt);
 STATIC int NCR_700_slave_configure(struct scsi_device *SDpnt);
 STATIC void NCR_700_slave_destroy(struct scsi_device *SDpnt);
-static int NCR_700_change_queue_depth(struct scsi_device *SDpnt, int depth);
+static int NCR_700_change_queue_depth(struct scsi_device *SDpnt, int depth, int reason);
 static int NCR_700_change_queue_type(struct scsi_device *SDpnt, int depth);
 
 STATIC struct device_attribute *NCR_700_dev_attrs[];
@@ -1491,7 +1491,7 @@ NCR_700_intr(int irq, void *dev_id)
        unsigned long flags;
        int handled = 0;
 
-       /* Use the host lock to serialise acess to the 53c700
+       /* Use the host lock to serialise access to the 53c700
         * hardware.  Note: In future, we may need to take the queue
         * lock to enter the done routines.  When that happens, we
         * need to ensure that for this driver, the host lock and the
@@ -2082,8 +2082,11 @@ NCR_700_slave_destroy(struct scsi_device *SDp)
 }
 
 static int
-NCR_700_change_queue_depth(struct scsi_device *SDp, int depth)
+NCR_700_change_queue_depth(struct scsi_device *SDp, int depth, int reason)
 {
+       if (reason != SCSI_QDEPTH_DEFAULT)
+               return -EOPNOTSUPP;
+
        if (depth > NCR_700_MAX_TAGS)
                depth = NCR_700_MAX_TAGS;