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 <[email protected]> --- drivers/video/fbdev/Kconfig | 1 + drivers/video/fbdev/s3fb.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig index fdac5f9177068..4f9dab566c28c 100644 --- a/drivers/video/fbdev/Kconfig +++ b/drivers/video/fbdev/Kconfig @@ -1145,6 +1145,7 @@ config FB_S3 select FB_CFB_FILLRECT select FB_CFB_COPYAREA select FB_CFB_IMAGEBLIT + select FB_IOMEM_FOPS select FB_TILEBLITTING select FB_SVGALIB select VGASTATE diff --git a/drivers/video/fbdev/s3fb.c b/drivers/video/fbdev/s3fb.c index 7d257489edcc2..589b349cb63e0 100644 --- a/drivers/video/fbdev/s3fb.c +++ b/drivers/video/fbdev/s3fb.c @@ -1047,6 +1047,7 @@ static const struct fb_ops s3fb_ops = { .owner = THIS_MODULE, .fb_open = s3fb_open, .fb_release = s3fb_release, + __FB_DEFAULT_IOMEM_OPS_RDWR, .fb_check_var = s3fb_check_var, .fb_set_par = s3fb_set_par, .fb_setcolreg = s3fb_setcolreg, @@ -1055,6 +1056,7 @@ static const struct fb_ops s3fb_ops = { .fb_fillrect = s3fb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = s3fb_imageblit, + __FB_DEFAULT_IOMEM_OPS_MMAP, .fb_get_caps = svga_get_caps, }; -- 2.42.0
