diff --git a/drivers/staging/erofs/Makefile b/drivers/staging/erofs/Makefile
index c91b652..38ab344 100644
--- a/drivers/staging/erofs/Makefile
+++ b/drivers/staging/erofs/Makefile
@@ -6,7 +6,7 @@ ccflags-y += -Wall -DEROFS_VERSION=\"$(EROFS_VERSION)\"
 
 obj-$(CONFIG_EROFS_FS) += erofs.o
 # staging requirement: to be self-contained in its own directory
-ccflags-y += -I$(src)/include
+ccflags-y += -I $(srctree)/$(src)/include
 erofs-objs := super.o inode.o data.o namei.o dir.o utils.o
 erofs-$(CONFIG_EROFS_FS_XATTR) += xattr.o
 erofs-$(CONFIG_EROFS_FS_ZIP) += unzip_vle.o unzip_vle_lz4.o
diff --git a/drivers/staging/media/davinci_vpfe/Makefile b/drivers/staging/media/davinci_vpfe/Makefile
index 9c57042..9268e50 100644
--- a/drivers/staging/media/davinci_vpfe/Makefile
+++ b/drivers/staging/media/davinci_vpfe/Makefile
@@ -6,5 +6,5 @@ davinci-vfpe-objs := \
 
 # Allow building it with COMPILE_TEST on other archs
 ifndef CONFIG_ARCH_DAVINCI
-ccflags-y += -Iarch/arm/mach-davinci/include/
+ccflags-y += -I $(srctree)/arch/arm/mach-davinci/include/
 endif
diff --git a/drivers/staging/most/Makefile b/drivers/staging/most/Makefile
index f8bcf48..c7662f6 100644
--- a/drivers/staging/most/Makefile
+++ b/drivers/staging/most/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 obj-$(CONFIG_MOST) += most_core.o
 most_core-y := core.o
-ccflags-y += -Idrivers/staging/
+ccflags-y += -I $(srctree)/drivers/staging/
 
 obj-$(CONFIG_MOST_CDEV)	+= cdev/
 obj-$(CONFIG_MOST_NET)	+= net/
diff --git a/drivers/staging/most/cdev/Makefile b/drivers/staging/most/cdev/Makefile
index afb9870..21b0bd7 100644
--- a/drivers/staging/most/cdev/Makefile
+++ b/drivers/staging/most/cdev/Makefile
@@ -1,4 +1,4 @@
 obj-$(CONFIG_MOST_CDEV) += most_cdev.o
 
 most_cdev-objs := cdev.o
-ccflags-y += -Idrivers/staging/
+ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/dim2/Makefile b/drivers/staging/most/dim2/Makefile
index 66676f5..6d15f04 100644
--- a/drivers/staging/most/dim2/Makefile
+++ b/drivers/staging/most/dim2/Makefile
@@ -1,4 +1,4 @@
 obj-$(CONFIG_MOST_DIM2) += most_dim2.o
 
 most_dim2-objs := dim2.o hal.o sysfs.o
-ccflags-y += -Idrivers/staging/
+ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/i2c/Makefile b/drivers/staging/most/i2c/Makefile
index a7d094c..c032fea 100644
--- a/drivers/staging/most/i2c/Makefile
+++ b/drivers/staging/most/i2c/Makefile
@@ -1,4 +1,4 @@
 obj-$(CONFIG_MOST_I2C) += most_i2c.o
 
 most_i2c-objs := i2c.o
-ccflags-y += -Idrivers/staging/
+ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/net/Makefile b/drivers/staging/most/net/Makefile
index 54500aa..820faec 100644
--- a/drivers/staging/most/net/Makefile
+++ b/drivers/staging/most/net/Makefile
@@ -1,4 +1,4 @@
 obj-$(CONFIG_MOST_NET) += most_net.o
 
 most_net-objs := net.o
-ccflags-y += -Idrivers/staging/
+ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/sound/Makefile b/drivers/staging/most/sound/Makefile
index eee8774..5bb55bb 100644
--- a/drivers/staging/most/sound/Makefile
+++ b/drivers/staging/most/sound/Makefile
@@ -1,4 +1,4 @@
 obj-$(CONFIG_MOST_SOUND) += most_sound.o
 
 most_sound-objs := sound.o
-ccflags-y += -Idrivers/staging/
+ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/usb/Makefile b/drivers/staging/most/usb/Makefile
index 18d28cb..910cd08 100644
--- a/drivers/staging/most/usb/Makefile
+++ b/drivers/staging/most/usb/Makefile
@@ -1,4 +1,4 @@
 obj-$(CONFIG_MOST_USB) += most_usb.o
 
 most_usb-objs := usb.o
-ccflags-y += -Idrivers/staging/
+ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/video/Makefile b/drivers/staging/most/video/Makefile
index 1c8e520..c6e01b6e 100644
--- a/drivers/staging/most/video/Makefile
+++ b/drivers/staging/most/video/Makefile
@@ -1,4 +1,4 @@
 obj-$(CONFIG_MOST_VIDEO) += most_video.o
 
 most_video-objs := video.o
-ccflags-y += -Idrivers/staging/
+ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/rtl8192u/Makefile b/drivers/staging/rtl8192u/Makefile
index 3022728..dcd51bf 100644
--- a/drivers/staging/rtl8192u/Makefile
+++ b/drivers/staging/rtl8192u/Makefile
@@ -7,7 +7,7 @@ ccflags-y += -O2
 ccflags-y += -DCONFIG_FORCE_HARD_FLOAT=y
 ccflags-y += -DJACKSON_NEW_8187 -DJACKSON_NEW_RX
 ccflags-y += -DTHOMAS_BEACON -DTHOMAS_TASKLET -DTHOMAS_SKB -DTHOMAS_TURBO
-ccflags-y += -Idrivers/staging/rtl8192u/ieee80211
+ccflags-y += -I $(srctree)/$(src)/ieee80211
 
 r8192u_usb-y := r8192U_core.o r8180_93cx6.o r8192U_wx.o		\
 		  r8190_rtl8256.o r819xU_phy.o r819xU_firmware.o	\
diff --git a/drivers/staging/unisys/visorhba/Makefile b/drivers/staging/unisys/visorhba/Makefile
index a8a8e0e..97e4875 100644
--- a/drivers/staging/unisys/visorhba/Makefile
+++ b/drivers/staging/unisys/visorhba/Makefile
@@ -6,5 +6,4 @@ obj-$(CONFIG_UNISYS_VISORHBA)	+= visorhba.o
 
 visorhba-y := visorhba_main.o
 
-ccflags-y += -Idrivers/staging/unisys/include
-
+ccflags-y += -I $(srctree)/$(src)/../include
diff --git a/drivers/staging/unisys/visornic/Makefile b/drivers/staging/unisys/visornic/Makefile
index 439e95e..336a746f 100644
--- a/drivers/staging/unisys/visornic/Makefile
+++ b/drivers/staging/unisys/visornic/Makefile
@@ -6,5 +6,4 @@ obj-$(CONFIG_UNISYS_VISORNIC)	+= visornic.o
 
 visornic-y := visornic_main.o
 
-ccflags-y += -Idrivers/staging/unisys/include
-
+ccflags-y += -I $(srctree)/$(src)/../include
diff --git a/drivers/staging/vc04_services/bcm2835-audio/Makefile b/drivers/staging/vc04_services/bcm2835-audio/Makefile
index d7b88d1..536bd0c 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/Makefile
+++ b/drivers/staging/vc04_services/bcm2835-audio/Makefile
@@ -1,5 +1,4 @@
 obj-$(CONFIG_SND_BCM2835)	+= snd-bcm2835.o
 snd-bcm2835-objs		:= bcm2835.o bcm2835-ctl.o bcm2835-pcm.o bcm2835-vchiq.o
 
-ccflags-y += -Idrivers/staging/vc04_services -D__VCCOREVER__=0x04000000
-
+ccflags-y += -I $(srctree)/$(src)/.. -D__VCCOREVER__=0x04000000
diff --git a/drivers/staging/vc04_services/bcm2835-camera/Makefile b/drivers/staging/vc04_services/bcm2835-camera/Makefile
index 2a4565e..472f21e 100644
--- a/drivers/staging/vc04_services/bcm2835-camera/Makefile
+++ b/drivers/staging/vc04_services/bcm2835-camera/Makefile
@@ -7,5 +7,5 @@ bcm2835-v4l2-$(CONFIG_VIDEO_BCM2835) := \
 obj-$(CONFIG_VIDEO_BCM2835) += bcm2835-v4l2.o
 
 ccflags-y += \
-	-Idrivers/staging/vc04_services \
+	-I $(srctree)/$(src)/.. \
 	-D__VCCOREVER__=0x04000000
