[PATCH 34/46] fbdev/savagefb: Initialize fb_ops to fbdev I/O-memory helpers

[Thomas Zimmermann]

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 at suse.de>
Cc: Antonino Daplas <adaplas at gmail.com>
---
 drivers/video/fbdev/Kconfig                  | 3 ++-
 drivers/video/fbdev/savage/savagefb_driver.c | 6 +++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 061af94837f99..2d8b7fe502f74 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -1163,10 +1163,11 @@ config FB_S3_DDC
 config FB_SAVAGE
 	tristate "S3 Savage support"
 	depends on FB && PCI
-	select FB_MODE_HELPERS
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
+	select FB_IOMEM_FOPS
+	select FB_MODE_HELPERS
 	select VGASTATE
 	select VIDEO_NOMODESET
 	help
diff --git a/drivers/video/fbdev/savage/savagefb_driver.c b/drivers/video/fbdev/savage/savagefb_driver.c
index b5f84bd4804b8..dddd6afcb972a 100644
--- a/drivers/video/fbdev/savage/savagefb_driver.c
+++ b/drivers/video/fbdev/savage/savagefb_driver.c
@@ -1641,6 +1641,7 @@ static const struct fb_ops savagefb_ops = {
 	.owner          = THIS_MODULE,
 	.fb_open        = savagefb_open,
 	.fb_release     = savagefb_release,
+	__FB_DEFAULT_IOMEM_OPS_RDWR,
 	.fb_check_var   = savagefb_check_var,
 	.fb_set_par     = savagefb_set_par,
 	.fb_setcolreg   = savagefb_setcolreg,
@@ -1652,10 +1653,9 @@ static const struct fb_ops savagefb_ops = {
 	.fb_imageblit   = savagefb_imageblit,
 	.fb_sync        = savagefb_sync,
 #else
-	.fb_fillrect    = cfb_fillrect,
-	.fb_copyarea    = cfb_copyarea,
-	.fb_imageblit   = cfb_imageblit,
+	__FB_DEFAULT_IOMEM_OPS_DRAW,
 #endif
+	__FB_DEFAULT_IOMEM_OPS_MMAP,
 };
 
 /* --------------------------------------------------------------------- */
-- 
2.42.0