There's no point in having support for framebuffer notifications
is CONFIG_FB is disabled. This commit adds the necessary stubs
for code to link properly when CONFIG_FB=n and moves fb-notify.o
to be built only when CONFIG_FB=y.
Signed-off-by: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxxxxxxxxx>
---
drivers/video/fbdev/Kconfig | 4 ++++
drivers/video/fbdev/core/Makefile | 2 +-
include/linux/fb.h | 18 ++++++++++++++++++
3 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 8b1d371b5404..031063223698 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -5,6 +5,7 @@
menuconfig FB
tristate "Support for frame buffer devices"
select FB_CMDLINE
+ select FB_NOTIFY
---help---
The frame buffer device provides an abstraction for the graphics
hardware. It represents the frame buffer of some video hardware and
@@ -56,6 +57,9 @@ config FIRMWARE_EDID
config FB_CMDLINE
bool
+config FB_NOTIFY
+ bool
+
config FB_DDC
tristate
depends on FB
diff --git a/drivers/video/fbdev/core/Makefile b/drivers/video/fbdev/core/Makefile
index 23d86a8b7d7b..9e3ddf225393 100644
--- a/drivers/video/fbdev/core/Makefile
+++ b/drivers/video/fbdev/core/Makefile
@@ -1,5 +1,5 @@
-obj-y += fb_notify.o
obj-$(CONFIG_FB_CMDLINE) += fb_cmdline.o
+obj-$(CONFIG_FB_NOTIFY) += fb_notify.o
obj-$(CONFIG_FB) += fb.o
fb-y := fbmem.o fbmon.o fbcmap.o fbsysfs.o \
modedb.o fbcvt.o
diff --git a/include/linux/fb.h b/include/linux/fb.h
index bc9afa74ee11..760fb956a00f 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -175,9 +175,27 @@ struct fb_blit_caps {
u32 flags;
};
+#ifdef CONFIG_FB_NOTIFY
extern int fb_register_client(struct notifier_block *nb);
extern int fb_unregister_client(struct notifier_block *nb);
extern int fb_notifier_call_chain(unsigned long val, void *v);
+#else
+static inline int fb_register_client(struct notifier_block *nb)
+{
+ return 0;
+};
+
+static inline int fb_unregister_client(struct notifier_block *nb)
+{
+ return 0;
+};
+
+static inline int fb_notifier_call_chain(unsigned long val, void *v)
+{
+ return 0;
+};
+#endif
+
/*
* Pixmap structure definition
*
--
2.5.2
--
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