Initialize the instance of struct fb_ops with fbdev initializer
macros for framebuffers in I/O address space. Set the read/write,
draw and mmap callbacks to the correct implementation and avoid
implicit defaults. Also select the necessary I/O helpers in Kconfig.
Fbdev drivers sometimes rely on the callbacks being NULL for a
default implementation to be invoked; hence requiring the I/O
helpers to be built in any case. Setting all callbacks in all
drivers explicitly will allow to make the I/O helpers optional.
This benefits systems that do not use these functions.
No functional changes.
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
---
drivers/video/fbdev/Kconfig | 1 +
drivers/video/fbdev/cobalt_lcdfb.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 06d20787da8b8..5f8ba796aa382 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -1752,6 +1752,7 @@ config FB_GOLDFISH
config FB_COBALT
tristate "Cobalt server LCD frame buffer support"
depends on FB && MIPS_COBALT
+ select FB_IOMEM_HELPERS
config FB_SH7760
bool "SH7760/SH7763/SH7720/SH7721 LCDC support"
diff --git a/drivers/video/fbdev/cobalt_lcdfb.c b/drivers/video/fbdev/cobalt_lcdfb.c
index b94e7c97264cb..c2b8f894799ca 100644
--- a/drivers/video/fbdev/cobalt_lcdfb.c
+++ b/drivers/video/fbdev/cobalt_lcdfb.c
@@ -280,7 +280,9 @@ static const struct fb_ops cobalt_lcd_fbops = {
.fb_read = cobalt_lcdfb_read,
.fb_write = cobalt_lcdfb_write,
.fb_blank = cobalt_lcdfb_blank,
+ __FB_DEFAULT_IOMEM_OPS_DRAW,
.fb_cursor = cobalt_lcdfb_cursor,
+ __FB_DEFAULT_IOMEM_OPS_MMAP,
};
static int cobalt_lcdfb_probe(struct platform_device *dev)
--
2.42.0
