From: Andrzej Hajda <a.hajda@samsung.com>
Date: Thu, 11 Feb 2016 11:25:04 +0000 (+0100)
Subject: drm/exynos/decon: fix disable clocks order
X-Git-Tag: v4.14-rc1~3810^2~8^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=00780f3b1a10d1be006b920505faf1d02f76f0e4;p=platform%2Fkernel%2Flinux-rpi.git

drm/exynos/decon: fix disable clocks order

Decon requires that clocks should be disabled in reverse order. Otherwise
system hangs.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
---

diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
index 107224a..162ab93 100644
--- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
@@ -580,9 +580,9 @@ out:
 static int exynos5433_decon_suspend(struct device *dev)
 {
 	struct decon_context *ctx = dev_get_drvdata(dev);
-	int i;
+	int i = ARRAY_SIZE(decon_clks_name);
 
-	for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++)
+	while (--i >= 0)
 		clk_disable_unprepare(ctx->clks[i]);
 
 	return 0;