6.6-stable review patch. If anyone has any objections, please let me know.
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From: Thomas Zimmermann tzimmermann@suse.de
commit be729f9de6c64240645dc80a24162ac4d3fe00a8 upstream.
Remove psb_fbdev_fb_setcolreg(), which hasn't been called in almost a decade.
Gma500 commit 4d8d096e9ae8 ("gma500: introduce the framebuffer support code") added the helper psb_fbdev_fb_setcolreg() for setting the fbdev palette via fbdev's fb_setcolreg callback. Later commit 3da6c2f3b730 ("drm/gma500: use DRM_FB_HELPER_DEFAULT_OPS for fb_ops") set several default helpers for fbdev emulation, including fb_setcmap.
The fbdev subsystem always prefers fb_setcmap over fb_setcolreg. [1] Hence, the gma500 code is no longer in use and gma500 has been using drm_fb_helper_setcmap() for several years without issues.
Fixes: 3da6c2f3b730 ("drm/gma500: use DRM_FB_HELPER_DEFAULT_OPS for fb_ops") Cc: Patrik Jakobsson patrik.r.jakobsson@gmail.com Cc: Stefan Christ contact@stefanchrist.eu Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: dri-devel@lists.freedesktop.org Cc: stable@vger.kernel.org # v4.10+ Link: https://elixir.bootlin.com/linux/v6.16.9/source/drivers/video/fbdev/core/fbc... # [1] Signed-off-by: Thomas Zimmermann tzimmermann@suse.de Acked-by: Patrik Jakobsson patrik.r.jakobsson@gmail.com Link: https://lore.kernel.org/r/20250929082338.18845-1-tzimmermann@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/gma500/fbdev.c | 43 ----------------------------------------- 1 file changed, 43 deletions(-)
--- a/drivers/gpu/drm/gma500/fbdev.c +++ b/drivers/gpu/drm/gma500/fbdev.c @@ -51,48 +51,6 @@ static const struct vm_operations_struct * struct fb_ops */
-#define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16) - -static int psb_fbdev_fb_setcolreg(unsigned int regno, - unsigned int red, unsigned int green, - unsigned int blue, unsigned int transp, - struct fb_info *info) -{ - struct drm_fb_helper *fb_helper = info->par; - struct drm_framebuffer *fb = fb_helper->fb; - uint32_t v; - - if (!fb) - return -ENOMEM; - - if (regno > 255) - return 1; - - red = CMAP_TOHW(red, info->var.red.length); - blue = CMAP_TOHW(blue, info->var.blue.length); - green = CMAP_TOHW(green, info->var.green.length); - transp = CMAP_TOHW(transp, info->var.transp.length); - - v = (red << info->var.red.offset) | - (green << info->var.green.offset) | - (blue << info->var.blue.offset) | - (transp << info->var.transp.offset); - - if (regno < 16) { - switch (fb->format->cpp[0] * 8) { - case 16: - ((uint32_t *) info->pseudo_palette)[regno] = v; - break; - case 24: - case 32: - ((uint32_t *) info->pseudo_palette)[regno] = v; - break; - } - } - - return 0; -} - static int psb_fbdev_fb_mmap(struct fb_info *info, struct vm_area_struct *vma) { if (vma->vm_pgoff != 0) @@ -137,7 +95,6 @@ static const struct fb_ops psb_fbdev_fb_ .owner = THIS_MODULE, __FB_DEFAULT_IOMEM_OPS_RDWR, DRM_FB_HELPER_DEFAULT_OPS, - .fb_setcolreg = psb_fbdev_fb_setcolreg, __FB_DEFAULT_IOMEM_OPS_DRAW, .fb_mmap = psb_fbdev_fb_mmap, .fb_destroy = psb_fbdev_fb_destroy,