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/pm3fb.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig index ba5fc63691b16..afc1cf05a30f8 100644 --- a/drivers/video/fbdev/Kconfig +++ b/drivers/video/fbdev/Kconfig @@ -1404,6 +1404,7 @@ config FB_PM3 select FB_CFB_FILLRECT select FB_CFB_COPYAREA select FB_CFB_IMAGEBLIT + select FB_IOMEM_FOPS select VIDEO_NOMODESET help This is the frame buffer device driver for the 3DLabs Permedia3 diff --git a/drivers/video/fbdev/pm3fb.c b/drivers/video/fbdev/pm3fb.c index 16577d0e41b1a..6e55e42514d63 100644 --- a/drivers/video/fbdev/pm3fb.c +++ b/drivers/video/fbdev/pm3fb.c @@ -1203,6 +1203,7 @@ static int pm3fb_blank(int blank_mode, struct fb_info *info) static const struct fb_ops pm3fb_ops = { .owner = THIS_MODULE, + __FB_DEFAULT_IOMEM_OPS_RDWR, .fb_check_var = pm3fb_check_var, .fb_set_par = pm3fb_set_par, .fb_setcolreg = pm3fb_setcolreg, @@ -1213,6 +1214,7 @@ static const struct fb_ops pm3fb_ops = { .fb_blank = pm3fb_blank, .fb_sync = pm3fb_sync, .fb_cursor = pm3fb_cursor, + __FB_DEFAULT_IOMEM_OPS_MMAP, }; /* ------------------------------------------------------------------------- */ -- 2.42.0
