diff --git a/drivers/scsi/atari_NCR5380.c b/drivers/scsi/atari_NCR5380.c
index 81e4f566b6c8f378f264bca5a5a2632c4e0eb595..c912733ac077c07e5d98d12d5f26fefe177e0053 100644
--- a/drivers/scsi/atari_NCR5380.c
+++ b/drivers/scsi/atari_NCR5380.c
@@ -272,8 +272,9 @@ static struct scsi_host_template *the_template = NULL;
 	(struct NCR5380_hostdata *)(in)->hostdata
 #define	HOSTDATA(in) ((struct NCR5380_hostdata *)(in)->hostdata)
 
-#define	NEXT(cmd)	((cmd)->host_scribble)
-#define	NEXTADDR(cmd)	((Scsi_Cmnd **)&((cmd)->host_scribble))
+#define	NEXT(cmd)		((Scsi_Cmnd *)(cmd)->host_scribble)
+#define	SET_NEXT(cmd,next)	((cmd)->host_scribble = (void *)(next))
+#define	NEXTADDR(cmd)		((Scsi_Cmnd **)&(cmd)->host_scribble)
 
 #define	HOSTNO		instance->host_no
 #define	H_NO(cmd)	(cmd)->device->host->host_no
@@ -479,7 +480,7 @@ static void merge_contiguous_buffers(Scsi_Cmnd *cmd)
 	     virt_to_phys(page_address(cmd->SCp.buffer[1].page) +
 			  cmd->SCp.buffer[1].offset) == endaddr;) {
 		MER_PRINTK("VTOP(%p) == %08lx -> merging\n",
-			   cmd->SCp.buffer[1].address, endaddr);
+			   page_address(cmd->SCp.buffer[1].page), endaddr);
 #if (NDEBUG & NDEBUG_MERGING)
 		++cnt;
 #endif
@@ -1002,7 +1003,7 @@ static int NCR5380_queue_command(Scsi_Cmnd *cmd, void (*done)(Scsi_Cmnd *))
 	 * in a queue
 	 */
 
-	NEXT(cmd) = NULL;
+	SET_NEXT(cmd, NULL);
 	cmd->scsi_done = done;
 
 	cmd->result = 0;
@@ -1034,14 +1035,14 @@ static int NCR5380_queue_command(Scsi_Cmnd *cmd, void (*done)(Scsi_Cmnd *))
 	}
 	if (!(hostdata->issue_queue) || (cmd->cmnd[0] == REQUEST_SENSE)) {
 		LIST(cmd, hostdata->issue_queue);
-		NEXT(cmd) = hostdata->issue_queue;
+		SET_NEXT(cmd, hostdata->issue_queue);
 		hostdata->issue_queue = cmd;
 	} else {
 		for (tmp = (Scsi_Cmnd *)hostdata->issue_queue;
 		     NEXT(tmp); tmp = NEXT(tmp))
 			;
 		LIST(cmd, tmp);
-		NEXT(tmp) = cmd;
+		SET_NEXT(tmp, cmd);
 	}
 	local_irq_restore(flags);
 
@@ -1149,12 +1150,12 @@ static void NCR5380_main(void *bl)
 					local_irq_disable();
 					if (prev) {
 						REMOVE(prev, NEXT(prev), tmp, NEXT(tmp));
-						NEXT(prev) = NEXT(tmp);
+						SET_NEXT(prev, NEXT(tmp));
 					} else {
 						REMOVE(-1, hostdata->issue_queue, tmp, NEXT(tmp));
 						hostdata->issue_queue = NEXT(tmp);
 					}
-					NEXT(tmp) = NULL;
+					SET_NEXT(tmp, NULL);
 					falcon_dont_release++;
 
 					/* reenable interrupts after finding one */
@@ -1192,7 +1193,7 @@ static void NCR5380_main(void *bl)
 					} else {
 						local_irq_disable();
 						LIST(tmp, hostdata->issue_queue);
-						NEXT(tmp) = hostdata->issue_queue;
+						SET_NEXT(tmp, hostdata->issue_queue);
 						hostdata->issue_queue = tmp;
 #ifdef SUPPORT_TAGS
 						cmd_free_tag(tmp);
@@ -2295,7 +2296,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
 
 						local_irq_save(flags);
 						LIST(cmd,hostdata->issue_queue);
-						NEXT(cmd) = hostdata->issue_queue;
+						SET_NEXT(cmd, hostdata->issue_queue);
 						hostdata->issue_queue = (Scsi_Cmnd *) cmd;
 						local_irq_restore(flags);
 						QU_PRINTK("scsi%d: REQUEST SENSE added to head of "
@@ -2357,7 +2358,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
 					local_irq_save(flags);
 					cmd->device->disconnect = 1;
 					LIST(cmd,hostdata->disconnected_queue);
-					NEXT(cmd) = hostdata->disconnected_queue;
+					SET_NEXT(cmd, hostdata->disconnected_queue);
 					hostdata->connected = NULL;
 					hostdata->disconnected_queue = cmd;
 					local_irq_restore(flags);
@@ -2632,12 +2633,12 @@ static void NCR5380_reselect(struct Scsi_Host *instance)
 			falcon_dont_release++;
 			if (prev) {
 				REMOVE(prev, NEXT(prev), tmp, NEXT(tmp));
-				NEXT(prev) = NEXT(tmp);
+				SET_NEXT(prev, NEXT(tmp));
 			} else {
 				REMOVE(-1, hostdata->disconnected_queue, tmp, NEXT(tmp));
 				hostdata->disconnected_queue = NEXT(tmp);
 			}
-			NEXT(tmp) = NULL;
+			SET_NEXT(tmp, NULL);
 			break;
 		}
 	}
@@ -2769,7 +2770,7 @@ int NCR5380_abort(Scsi_Cmnd *cmd)
 		if (cmd == tmp) {
 			REMOVE(5, *prev, tmp, NEXT(tmp));
 			(*prev) = NEXT(tmp);
-			NEXT(tmp) = NULL;
+			SET_NEXT(tmp, NULL);
 			tmp->result = DID_ABORT << 16;
 			local_irq_restore(flags);
 			ABRT_PRINTK("scsi%d: abort removed command from issue queue.\n",
@@ -2844,7 +2845,7 @@ int NCR5380_abort(Scsi_Cmnd *cmd)
 				if (cmd == tmp) {
 					REMOVE(5, *prev, tmp, NEXT(tmp));
 					*prev = NEXT(tmp);
-					NEXT(tmp) = NULL;
+					SET_NEXT(tmp, NULL);
 					tmp->result = DID_ABORT << 16;
 					/* We must unlock the tag/LUN immediately here, since the
 					 * target goes to BUS FREE and doesn't send us another
@@ -2965,7 +2966,7 @@ static int NCR5380_bus_reset(Scsi_Cmnd *cmd)
 
 	for (i = 0; (cmd = disconnected_queue); ++i) {
 		disconnected_queue = NEXT(cmd);
-		NEXT(cmd) = NULL;
+		SET_NEXT(cmd, NULL);
 		cmd->result = (cmd->result & 0xffff) | (DID_RESET << 16);
 		cmd->scsi_done(cmd);
 	}
diff --git a/drivers/scsi/atari_scsi.c b/drivers/scsi/atari_scsi.c
index f766d0d81c99c1d8f1f9c045b6b6e4668c628db7..6f8403b82ba1b9a861af804b6a655bbea00060ea 100644
--- a/drivers/scsi/atari_scsi.c
+++ b/drivers/scsi/atari_scsi.c
@@ -69,9 +69,9 @@
 
 #define NDEBUG (0)
 
-#define NDEBUG_ABORT	0x800000
-#define NDEBUG_TAGS	0x1000000
-#define NDEBUG_MERGING	0x2000000
+#define NDEBUG_ABORT		0x00100000
+#define NDEBUG_TAGS		0x00200000
+#define NDEBUG_MERGING		0x00400000
 
 #define AUTOSENSE
 /* For the Atari version, use only polled IO or REAL_DMA */
diff --git a/drivers/scsi/atari_scsi.h b/drivers/scsi/atari_scsi.h
index 75b549b2dfc1a45b9f457ed4ada93868b4cdd4bc..efadb8d567c255a443f030c940a2b322d7d2ced2 100644
--- a/drivers/scsi/atari_scsi.h
+++ b/drivers/scsi/atari_scsi.h
@@ -113,144 +113,58 @@ int atari_scsi_release (struct Scsi_Host *);
  *
  */
 
-#if NDEBUG & NDEBUG_ARBITRATION
+#define dprint(flg, format...)			\
+({						\
+	if (NDEBUG & (flg))			\
+		printk(KERN_DEBUG format);	\
+})
+
 #define ARB_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define ARB_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_AUTOSENSE
+	dprint(NDEBUG_ARBITRATION, format , ## args)
 #define ASEN_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define ASEN_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_DMA
+	dprint(NDEBUG_AUTOSENSE, format , ## args)
 #define DMA_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define DMA_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_HANDSHAKE
+	dprint(NDEBUG_DMA, format , ## args)
 #define HSH_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define HSH_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_INFORMATION
+	dprint(NDEBUG_HANDSHAKE, format , ## args)
 #define INF_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define INF_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_INIT
+	dprint(NDEBUG_INFORMATION, format , ## args)
 #define INI_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define INI_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_INTR
+	dprint(NDEBUG_INIT, format , ## args)
 #define INT_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define INT_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_LINKED
+	dprint(NDEBUG_INTR, format , ## args)
 #define LNK_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define LNK_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_MAIN
+	dprint(NDEBUG_LINKED, format , ## args)
 #define MAIN_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define MAIN_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_NO_DATAOUT
+	dprint(NDEBUG_MAIN, format , ## args)
 #define NDAT_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define NDAT_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_NO_WRITE
+	dprint(NDEBUG_NO_DATAOUT, format , ## args)
 #define NWR_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define NWR_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_PIO
+	dprint(NDEBUG_NO_WRITE, format , ## args)
 #define PIO_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define PIO_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_PSEUDO_DMA
+	dprint(NDEBUG_PIO, format , ## args)
 #define PDMA_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define PDMA_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_QUEUES
+	dprint(NDEBUG_PSEUDO_DMA, format , ## args)
 #define QU_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define QU_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_RESELECTION
+	dprint(NDEBUG_QUEUES, format , ## args)
 #define RSL_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define RSL_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_SELECTION
+	dprint(NDEBUG_RESELECTION, format , ## args)
 #define SEL_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define SEL_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_USLEEP
+	dprint(NDEBUG_SELECTION, format , ## args)
 #define USL_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define USL_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_LAST_BYTE_SENT
+	dprint(NDEBUG_USLEEP, format , ## args)
 #define LBS_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define LBS_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_RESTART_SELECT
+	dprint(NDEBUG_LAST_BYTE_SENT, format , ## args)
 #define RSS_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define RSS_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_EXTENDED
+	dprint(NDEBUG_RESTART_SELECT, format , ## args)
 #define EXT_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define EXT_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_ABORT
+	dprint(NDEBUG_EXTENDED, format , ## args)
 #define ABRT_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define ABRT_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_TAGS
+	dprint(NDEBUG_ABORT, format , ## args)
 #define TAG_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define TAG_PRINTK(format, args...)
-#endif
-#if NDEBUG & NDEBUG_MERGING
+	dprint(NDEBUG_TAGS, format , ## args)
 #define MER_PRINTK(format, args...) \
-	printk(KERN_DEBUG format , ## args)
-#else
-#define MER_PRINTK(format, args...)
-#endif
+	dprint(NDEBUG_MERGING, format , ## args)
 
 /* conditional macros for NCR5380_print_{,phase,status} */