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>
Cc: Florian Tobias Schandinat <FlorianSchandinat@xxxxxx>
---
drivers/video/fbdev/Kconfig | 1 +
drivers/video/fbdev/via/viafbdev.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 021214ecd5e80..dab0e49a66d20 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -1240,6 +1240,7 @@ config FB_VIA
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
+ select FB_IOMEM_FOPS
select I2C_ALGOBIT
select VIDEO_NOMODESET
help
diff --git a/drivers/video/fbdev/via/viafbdev.c b/drivers/video/fbdev/via/viafbdev.c
index 190fddee62e67..58868f8880d65 100644
--- a/drivers/video/fbdev/via/viafbdev.c
+++ b/drivers/video/fbdev/via/viafbdev.c
@@ -2054,6 +2054,7 @@ static struct fb_ops viafb_ops = {
.owner = THIS_MODULE,
.fb_open = viafb_open,
.fb_release = viafb_release,
+ __FB_DEFAULT_IOMEM_OPS_RDWR,
.fb_check_var = viafb_check_var,
.fb_set_par = viafb_set_par,
.fb_setcolreg = viafb_setcolreg,
@@ -2065,6 +2066,7 @@ static struct fb_ops viafb_ops = {
.fb_cursor = viafb_cursor,
.fb_ioctl = viafb_ioctl,
.fb_sync = viafb_sync,
+ __FB_DEFAULT_IOMEM_OPS_MMAP,
};
--
2.42.0
