After cleaning up <linux/fb.h> in commit 11b4eedfc87d ("fbdev: Do not include <linux/backlight.h> in header"), building with CONFIG_PMAC_BACKLIGHT=y returns errors about missing declarations. Patches 1 and 2 resolve the errors. Patch 1 has been reviewed at [1]. Patch 3 removes another dependency between backlight and fbdev code.
Compile tested with ppc6xx_defconfig.
v2: * via-pmu-backlight: fix build errors * powerpc: resolve dependency between fbdev and backlight
[1] https://patchwork.freedesktop.org/series/130661/
Thomas Zimmermann (3): fbdev/chipsfb: Include <linux/backlight.h> macintosh/via-pmu-backlight: Include <linux/backlight.h> arch/powerpc: Remove <linux/fb.h> from backlight code
arch/powerpc/include/asm/backlight.h | 5 ++-- arch/powerpc/platforms/powermac/backlight.c | 26 --------------------- drivers/macintosh/via-pmu-backlight.c | 1 + drivers/video/fbdev/chipsfb.c | 1 + 4 files changed, 4 insertions(+), 29 deletions(-)