From: Maxime Ripard <maxime.ripard@bootlin.com>
Date: Thu, 12 Jul 2018 10:08:18 +0200
Subject: drm/sun4i: tcon-top: Fix return type warning
Git-commit: b7178ffe7eb86fb9d428801509a5bd54d3ba94da
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

When commit af11942ee44e ("drm/sun4i: tcon-top: Cleanup clock handling")
was merged, the error handling path of the of_property_match_string was
changed to take into account the fact that the returned value of that
function wasn't an error pointer but an error code.

Unfortunately, this introduced a warning since the now returned value is an
integer, while the sun8i_tcon_top_register_gate function should return an
error pointer.

Fix that by calling ERR_PTR.

Cc: Jernej Skrabec <jernej.skrabec@siol.net>
Cc: Chen-Yu Tsai <wens@csie.org>
Fixes: af11942ee44e ("drm/sun4i: tcon-top: Cleanup clock handling")
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180712080818.3571-1-maxime.ripard@bootlin.com

Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/sun4i/sun8i_tcon_top.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/sun4i/sun8i_tcon_top.c
+++ b/drivers/gpu/drm/sun4i/sun8i_tcon_top.c
@@ -99,7 +99,7 @@ static struct clk_hw *sun8i_tcon_top_reg
 
 	index = of_property_match_string(dev->of_node, "clock-names", parent);
 	if (index < 0)
-		return index;
+		return ERR_PTR(index);
 
 	parent_name = of_clk_get_parent_name(dev->of_node, index);