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: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Ezequiel Garcia 2015-11-25 00:11:48 -03:00 committed by Tomi Valkeinen
parent c3c296b069
commit 5ec9653806
3 changed files with 23 additions and 1 deletions

View file

@ -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

View file

@ -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

View file

@ -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
*