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@suse.de>
Acked-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230927074722.6197-36-tzimmermann@suse.de
config FB_SIS
tristate "SiS/XGI display support"
depends on FB && PCI
+ select BOOT_VESA_SUPPORT if FB_SIS = y
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
- select BOOT_VESA_SUPPORT if FB_SIS = y
+ select FB_IOMEM_FOPS
select FB_SIS_300 if !FB_SIS_315
select VIDEO_NOMODESET
help
.owner = THIS_MODULE,
.fb_open = sisfb_open,
.fb_release = sisfb_release,
+ __FB_DEFAULT_IOMEM_OPS_RDWR,
.fb_check_var = sisfb_check_var,
.fb_set_par = sisfb_set_par,
.fb_setcolreg = sisfb_setcolreg,
#ifdef SIS_NEW_CONFIG_COMPAT
.fb_compat_ioctl= sisfb_ioctl,
#endif
- .fb_ioctl = sisfb_ioctl
+ .fb_ioctl = sisfb_ioctl,
+ __FB_DEFAULT_IOMEM_OPS_MMAP,
};
/* ---------------- Chip generation dependent routines ---------------- */