Initialize the instance of struct fb_ops with fbdev initializer
macros for framebuffers in virtual address space. Set the read/write,
draw and mmap callbacks to the correct implementation and avoid
implicit defaults. Also select the necessary helpers in Kconfig.
Fbdev drivers sometimes rely on the callbacks being NULL for a
default I/O-memory-based 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.
Signed-off-by: Thomas Zimmermann <tzimmerm...@suse.de>
Cc: Miguel Ojeda <oj...@kernel.org>
Reviewed-by: Javier Martinez Canillas <javi...@redhat.com>
Acked-by: Miguel Ojeda <oj...@kernel.org>
---
drivers/auxdisplay/Kconfig | 5 +----
drivers/auxdisplay/cfag12864bfb.c | 7 ++-----
2 files changed, 3 insertions(+), 9 deletions(-)
diff --git a/drivers/auxdisplay/Kconfig b/drivers/auxdisplay/Kconfig
index 64012cda4d126..4377e53f8f572 100644
--- a/drivers/auxdisplay/Kconfig
+++ b/drivers/auxdisplay/Kconfig
@@ -112,10 +112,7 @@ config CFAG12864B
depends on X86
depends on FB
depends on KS0108
- select FB_SYS_FILLRECT
- select FB_SYS_COPYAREA
- select FB_SYS_IMAGEBLIT
- select FB_SYS_FOPS
+ select FB_SYSMEM_HELPERS
default n
help
If you have a Crystalfontz 128x64 2-color LCD, cfag12864b Series,
diff --git a/drivers/auxdisplay/cfag12864bfb.c
b/drivers/auxdisplay/cfag12864bfb.c
index c0ba693845aaf..ede0f9a513110 100644
--- a/drivers/auxdisplay/cfag12864bfb.c
+++ b/drivers/auxdisplay/cfag12864bfb.c
@@ -56,11 +56,8 @@ static int cfag12864bfb_mmap(struct fb_info *info, struct
vm_area_struct *vma)
static const struct fb_ops cfag12864bfb_ops = {
.owner = THIS_MODULE,
- .fb_read = fb_sys_read,
- .fb_write = fb_sys_write,
- .fb_fillrect = sys_fillrect,
- .fb_copyarea = sys_copyarea,
- .fb_imageblit = sys_imageblit,
+ __FB_DEFAULT_SYSMEM_OPS_RDWR,
+ __FB_DEFAULT_SYSMEM_OPS_DRAW,
.fb_mmap = cfag12864bfb_mmap,
};
--
2.43.0
