diff --git a/iscsi-scst/kernel/config.c b/iscsi-scst/kernel/config.c
index a51305186..14f4c2aa8 100644
--- a/iscsi-scst/kernel/config.c
+++ b/iscsi-scst/kernel/config.c
@@ -1213,26 +1213,26 @@ static void iscsi_dump_char(int ch, unsigned char *text, int *pos)
 
 	if (ch < 0) {
 		while ((i % 16) != 0) {
-			printk(KERN_CONT "   ");
+			pr_cont("   ");
 			text[i] = ' ';
 			i++;
 			if ((i % 16) == 0)
-				printk(KERN_CONT " | %.16s |\n", text);
+				pr_cont(" | %.16s |\n", text);
 			else if ((i % 4) == 0)
-				printk(KERN_CONT " |");
+				pr_cont(" |");
 		}
 		i = 0;
 		goto out;
 	}
 
 	text[i] = (ch < 0x20 || (ch >= 0x80 && ch <= 0xa0)) ? ' ' : ch;
-	printk(KERN_CONT " %02x", ch);
+	pr_cont(" %02x", ch);
 	i++;
 	if ((i % 16) == 0) {
-		printk(KERN_CONT " | %.16s |\n", text);
+		pr_cont(" | %.16s |\n", text);
 		i = 0;
 	} else if ((i % 4) == 0)
-		printk(KERN_CONT " |");
+		pr_cont(" |");
 
 out:
 	*pos = i;
diff --git a/iscsi-scst/kernel/conn.c b/iscsi-scst/kernel/conn.c
index e2f384bd8..e563838fc 100644
--- a/iscsi-scst/kernel/conn.c
+++ b/iscsi-scst/kernel/conn.c
@@ -1007,13 +1007,13 @@ int __del_conn(struct iscsi_session *session, struct iscsi_kern_conn_info *info)
 void iscsi_extracheck_is_rd_thread(struct iscsi_conn *conn)
 {
 	if (unlikely(current != conn->rd_task)) {
-		printk(KERN_EMERG "conn %p rd_task != current %p (pid %d)\n",
-			conn, current, current->pid);
+		pr_emerg("conn %p rd_task != current %p (pid %d)\n",
+			 conn, current, current->pid);
 		while (in_softirq())
 			local_bh_enable();
-		printk(KERN_EMERG "rd_state %x\n", conn->rd_state);
-		printk(KERN_EMERG "rd_task %p\n", conn->rd_task);
-		printk(KERN_EMERG "rd_task->pid %d\n", conn->rd_task->pid);
+		pr_emerg("rd_state %x\n", conn->rd_state);
+		pr_emerg("rd_task %p\n", conn->rd_task);
+		pr_emerg("rd_task->pid %d\n", conn->rd_task->pid);
 		BUG();
 	}
 }
@@ -1021,13 +1021,13 @@ void iscsi_extracheck_is_rd_thread(struct iscsi_conn *conn)
 void iscsi_extracheck_is_wr_thread(struct iscsi_conn *conn)
 {
 	if (unlikely(current != conn->wr_task)) {
-		printk(KERN_EMERG "conn %p wr_task != current %p (pid %d)\n",
-			conn, current, current->pid);
+		pr_emerg("conn %p wr_task != current %p (pid %d)\n",
+			 conn, current, current->pid);
 		while (in_softirq())
 			local_bh_enable();
-		printk(KERN_EMERG "wr_state %x\n", conn->wr_state);
-		printk(KERN_EMERG "wr_task %p\n", conn->wr_task);
-		printk(KERN_EMERG "wr_task->pid %d\n", conn->wr_task->pid);
+		pr_emerg("wr_state %x\n", conn->wr_state);
+		pr_emerg("wr_task %p\n", conn->wr_task);
+		pr_emerg("wr_task->pid %d\n", conn->wr_task->pid);
 		BUG();
 	}
 }
diff --git a/qla2x00t/qla2x_tgt.h b/qla2x00t/qla2x_tgt.h
index 0d644c2af..dbc8fa4eb 100644
--- a/qla2x00t/qla2x_tgt.h
+++ b/qla2x00t/qla2x_tgt.h
@@ -103,7 +103,7 @@ __qla2x00_send_enable_lun(scsi_qla_host_t *ha, int enable)
 		qla_clear_tgt_mode(ha);
 #if defined(QL_DEBUG_LEVEL_2) || defined(QL_DEBUG_LEVEL_3)
 	if (!pkt)
-		printk(KERN_ERR "%s: **** FAILED ****\n", __func__);
+		pr_err("%s: **** FAILED ****\n", __func__);
 #endif
 
 	return;
diff --git a/scst/include/scst.h b/scst/include/scst.h
index ae3b86538..c842d2699 100644
--- a/scst/include/scst.h
+++ b/scst/include/scst.h
@@ -2990,7 +2990,7 @@ static inline bool scst_cmd_atomic(struct scst_cmd *cmd)
 	 */
 	if (unlikely((in_atomic() || in_interrupt() || irqs_disabled()) &&
 		     !res)) {
-		printk(KERN_ERR "ERROR: atomic context and non-atomic cmd!\n");
+		pr_err("ERROR: atomic context and non-atomic cmd!\n");
 		dump_stack();
 		cmd->atomic = 1;
 		res = 1;
diff --git a/scst/include/scst_debug.h b/scst/include/scst_debug.h
index cf2c83daa..027e92dd4 100644
--- a/scst/include/scst_debug.h
+++ b/scst/include/scst_debug.h
@@ -32,12 +32,47 @@
 #include <linux/bug.h>		/* for WARN_ON_ONCE */
 #endif
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 28)
+/*
+ * See also the following commits:
+ * d091c2f5 - Introduction of pr_info() etc. in <linux/kernel.h>.
+ * 311d0761 - Introduction of pr_cont() in <linux/kernel.h>.
+ * 968ab183 - Moved pr_info() etc. from <linux/kernel.h> to <linux/printk.h>
+ */
+#ifndef pr_info
+#ifndef pr_fmt
+#define pr_fmt(fmt) fmt
+#endif
+
+#define pr_emerg(fmt, ...) \
+        printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_alert(fmt, ...) \
+        printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_crit(fmt, ...) \
+        printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_err(fmt, ...) \
+        printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_warning(fmt, ...) \
+        printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_warn pr_warning
+#define pr_notice(fmt, ...) \
+        printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_info(fmt, ...) \
+        printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
+#endif
+#endif
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 30)
+#ifndef pr_cont
+#define pr_cont(fmt, ...) \
+        printk(KERN_CONT fmt, ##__VA_ARGS__)
+#endif
+#endif
+
 #if !defined(INSIDE_KERNEL_TREE)
 #ifdef CONFIG_SCST_DEBUG
 
 #define sBUG() do {						\
-	printk(KERN_CRIT "BUG at %s:%d\n",			\
-	       __FILE__, __LINE__);				\
+	pr_crit("BUG at %s:%d\n",  __FILE__, __LINE__);		\
 	local_irq_enable();					\
 	while (in_softirq())					\
 		local_bh_enable();				\
@@ -46,8 +81,8 @@
 
 #define sBUG_ON(p) do {						\
 	if (unlikely(p)) {					\
-		printk(KERN_CRIT "BUG at %s:%d (%s)\n",		\
-		       __FILE__, __LINE__, #p);			\
+		pr_crit("BUG at %s:%d (%s)\n",			\
+			__FILE__, __LINE__, #p);		\
 		local_irq_enable();				\
 		while (in_softirq())				\
 			local_bh_enable();			\