In the past the ast driver relied upon the fbdev emulation helpers to call ->load_lut at boot-up. But since

commit b8e2b0199cc377617dc238f5106352c06dcd3fa2 Author: Peter Rosin peda@axentia.se Date: Tue Jul 4 12:36:57 2017 +0200

drm/fb-helper: factor out pseudo-palette

that's cleaned up and drivers are expected to boot into a consistent lut state. This patch fixes that.

Fixes: b8e2b0199cc3 ("drm/fb-helper: factor out pseudo-palette") Cc: Peter Rosin peda@axenita.se Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: stable@vger.kernel.org # v4.14+ Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=198123 Cc: Bill Fraser bill.fraser@gmail.com Reported-and-Tested-by: Bill Fraser bill.fraser@gmail.com Tested-by: Konstantin Khlebnikov koct9i@gmail.com Tested-by: Paul Tobias tobias.pal@gmail.com Signed-off-by: Daniel Vetter daniel.vetter@intel.com --- drivers/gpu/drm/ast/ast_mode.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c index 9555a3542022..831b73392d82 100644 --- a/drivers/gpu/drm/ast/ast_mode.c +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -644,6 +644,7 @@ static void ast_crtc_commit(struct drm_crtc *crtc) { struct ast_private *ast = crtc->dev->dev_private; ast_set_index_reg_mask(ast, AST_IO_SEQ_PORT, 0x1, 0xdf, 0); + ast_crtc_load_lut(crtc); }