9 files changed, 12 insertions, 9 deletions
diff --git a/drivers/staging/most/Makefile b/drivers/staging/most/Makefile
index f8bcf488ecf2..c7662f65f6db 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 afb9870eb50f..21b0bd72c01d 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 $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/cdev/cdev.c b/drivers/staging/most/cdev/cdev.c
index ea64aabda94e..f2b347cda8b7 100644
--- a/drivers/staging/most/cdev/cdev.c
+++ b/drivers/staging/most/cdev/cdev.c
@@ -453,7 +453,9 @@ static int comp_probe(struct most_interface *iface, int channel_id,
 	c->devno = MKDEV(comp.major, current_minor);
 	cdev_init(&c->cdev, &channel_fops);
 	c->cdev.owner = THIS_MODULE;
-	cdev_add(&c->cdev, c->devno, 1);
+	retval = cdev_add(&c->cdev, c->devno, 1);
+	if (retval < 0)
+		goto err_free_c;
 	c->iface = iface;
 	c->cfg = cfg;
 	c->channel_id = channel_id;
@@ -485,6 +487,7 @@ err_free_kfifo_and_del_list:
 	list_del(&c->list);
 err_del_cdev_and_free_channel:
 	cdev_del(&c->cdev);
+err_free_c:
 	kfree(c);
 err_remove_ida:
 	ida_simple_remove(&comp.minor_id, current_minor);
diff --git a/drivers/staging/most/dim2/Makefile b/drivers/staging/most/dim2/Makefile
index 66676f5907ee..6d15f045a767 100644
--- a/drivers/staging/most/dim2/Makefile
+++ b/drivers/staging/most/dim2/Makefile
@@ -1,4 +1,4 @@
 obj-$(CONFIG_MOST_DIM2) += most_dim2.o
 
 most_dim2-objs := dim2.o hal.o sysfs.o
-ccflags-y += -Idrivers/staging/
+ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/i2c/Makefile b/drivers/staging/most/i2c/Makefile
index a7d094c1e1c2..c032fea979b3 100644
--- a/drivers/staging/most/i2c/Makefile
+++ b/drivers/staging/most/i2c/Makefile
@@ -1,4 +1,4 @@
 obj-$(CONFIG_MOST_I2C) += most_i2c.o
 
 most_i2c-objs := i2c.o
-ccflags-y += -Idrivers/staging/
+ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/net/Makefile b/drivers/staging/most/net/Makefile
index 54500aa77be8..820faec6b296 100644
--- a/drivers/staging/most/net/Makefile
+++ b/drivers/staging/most/net/Makefile
@@ -1,4 +1,4 @@
 obj-$(CONFIG_MOST_NET) += most_net.o
 
 most_net-objs := net.o
-ccflags-y += -Idrivers/staging/
+ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/sound/Makefile b/drivers/staging/most/sound/Makefile
index eee8774e38cb..5bb55bb108fb 100644
--- a/drivers/staging/most/sound/Makefile
+++ b/drivers/staging/most/sound/Makefile
@@ -1,4 +1,4 @@
 obj-$(CONFIG_MOST_SOUND) += most_sound.o
 
 most_sound-objs := sound.o
-ccflags-y += -Idrivers/staging/
+ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/usb/Makefile b/drivers/staging/most/usb/Makefile
index 18d28cba4fbf..910cd08bad7c 100644
--- a/drivers/staging/most/usb/Makefile
+++ b/drivers/staging/most/usb/Makefile
@@ -1,4 +1,4 @@
 obj-$(CONFIG_MOST_USB) += most_usb.o
 
 most_usb-objs := usb.o
-ccflags-y += -Idrivers/staging/
+ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/video/Makefile b/drivers/staging/most/video/Makefile
index 1c8e520e02a2..c6e01b6ecfe6 100644
--- a/drivers/staging/most/video/Makefile
+++ b/drivers/staging/most/video/Makefile
@@ -1,4 +1,4 @@
 obj-$(CONFIG_MOST_VIDEO) += most_video.o
 
 most_video-objs := video.o
-ccflags-y += -Idrivers/staging/
+ccflags-y += -I $(srctree)/drivers/staging/