4.15-stable review patch. If anyone has any objections, please let me know.
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From: Daniel Vetter daniel.vetter@ffwll.ch
commit 24b8ef699e8221d2b7f813adaab13eec053e1507 upstream.
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 Signed-off-by: Daniel Vetter daniel.vetter@intel.com Signed-off-by: Dave Airlie airlied@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/ast/ast_mode.c | 1 + 1 file changed, 1 insertion(+)
--- 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_c { 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); }