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/pm2fb.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig index 8b387d98f6b1e..ba5fc63691b16 100644 --- a/drivers/video/fbdev/Kconfig +++ b/drivers/video/fbdev/Kconfig @@ -94,6 +94,7 @@ config FB_PM2 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 cards based on diff --git a/drivers/video/fbdev/pm2fb.c b/drivers/video/fbdev/pm2fb.c index 5a79a12efd8e3..f34429829b7d7 100644 --- a/drivers/video/fbdev/pm2fb.c +++ b/drivers/video/fbdev/pm2fb.c @@ -1492,6 +1492,7 @@ static int pm2fb_cursor(struct fb_info *info, struct fb_cursor *cursor) static const struct fb_ops pm2fb_ops = { .owner = THIS_MODULE, + __FB_DEFAULT_IOMEM_OPS_RDWR, .fb_check_var = pm2fb_check_var, .fb_set_par = pm2fb_set_par, .fb_setcolreg = pm2fb_setcolreg, @@ -1502,6 +1503,7 @@ static const struct fb_ops pm2fb_ops = { .fb_imageblit = pm2fb_imageblit, .fb_sync = pm2fb_sync, .fb_cursor = pm2fb_cursor, + __FB_DEFAULT_IOMEM_OPS_MMAP, }; /* -- 2.42.0
