diff --git a/qla2x00t-32gbit/Kconfig b/qla2x00t-32gbit/Kconfig
index 285e25b8b..09f9cc0d6 100644
--- a/qla2x00t-32gbit/Kconfig
+++ b/qla2x00t-32gbit/Kconfig
@@ -1,8 +1,10 @@
 config SCSI_QLA_FC
 	tristate "QLogic QLA2XXX Fibre Channel Support"
 	depends on PCI && SCSI
-	select SCSI_FC_ATTRS
+	depends on SCSI_FC_ATTRS
+	depends on NVME_FC || !NVME_FC
 	select FW_LOADER
+	select BTREE
 	---help---
 	This qla2xxx driver supports all QLogic Fibre Channel
 	PCI and PCIe host adapters.
@@ -26,6 +28,8 @@ config SCSI_QLA_FC
 
 		http://ldriver.qlogic.com/firmware/
 
+	They are also included in the linux-firmware tree as well.
+
 config SCSI_QLA2XXX_TARGET
 	bool "QLogic 2xxx target mode support"
 	depends on SCSI_QLA_FC
diff --git a/scripts/kernel-functions b/scripts/kernel-functions
index 016389820..de2be73e7 100644
--- a/scripts/kernel-functions
+++ b/scripts/kernel-functions
@@ -114,6 +114,12 @@ function extract_kernel_tree {
     fi
     mv "linux-$1" ".." || return $?
     cd "../linux-$1" || return $?
+  )
+  rmdir "${tmpdir}"
+}
+
+# Patch a kernel tree where $1 is the kernel version.
+function patch_kernel {
     if [ "$1" = "2.6.29" -o "$1" = "2.6.29.1" -o "$1" = "2.6.29.2" -o "$1" = "2.6.29.3" ]
     then
       patch -f -s -p1 <<'EOF'
@@ -411,6 +417,11 @@ index 141da26fda4b..343ec388ae2e 100644
 EOF
 	    ;;
     esac
+
+    # Use sed to patch the ____ilog2_NaN() prototype.
+    sed -i 's/__attribute__((const, noreturn))/__attribute__((noreturn))/' \
+	include/linux/log2.h tools/include/linux/log2.h 2>/dev/null
+
     # After patch-v4.14.1[12] has been applied, the execute bit has to be
     # set for sync-check.sh since patch can't do that.
     for f in "tools/objtool/sync-check.sh"; do
@@ -418,8 +429,6 @@ EOF
 	chmod a+x "$f"
       fi
     done
-  )
-  rmdir "${tmpdir}"
 }
 
 function download_and_extract_kernel_tree {
@@ -431,6 +440,8 @@ function download_and_extract_kernel_tree {
 		{ git tag -l "v$1" >/dev/null || git fetch stable; } &&
 		git archive "v$1"
 	) | tar -C "linux-$1" -xf-
-    fi
-    download_kernel "$1" && extract_kernel_tree "$1"
+    else
+	download_kernel "$1" && extract_kernel_tree "$1"
+    fi &&
+	(cd linux-$1 && patch_kernel "$1")
 }
diff --git a/scst/include/backport.h b/scst/include/backport.h
index 67ab63fcb..e05627e85 100644
--- a/scst/include/backport.h
+++ b/scst/include/backport.h
@@ -498,6 +498,20 @@ ssize_t kernel_write(struct file *file, const void *buf, size_t count,
 #endif
 #endif
 
+/* <linux/interrupt.h> */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 39) && !defined(RHEL_MAJOR)
+/*
+ * See also commit cd7eab44e994 ("genirq: Add IRQ affinity notifiers";
+ * v2.6.39).
+ */
+struct irq_affinity_notify;
+static inline int
+irq_set_affinity_notifier(unsigned int irq, struct irq_affinity_notify *notify)
+{
+	return 0;
+}
+#endif
+
 /* <linux/iocontext.h> */
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25) || \