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Commit 5ec96538 authored by Ezequiel Garcia's avatar Ezequiel Garcia Committed by Tomi Valkeinen
Browse files

fbdev: Make fb-notify a no-op if CONFIG_FB=n 



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: default avatarEzequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent c3c296b0

drivers/video/fbdev/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -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

drivers/video/fbdev/core/Makefile

+1 −1
Original line number Diff line number Diff line 
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

include/linux/fb.h

+18 −0
Original line number Diff line number Diff line
@@ -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

 *