From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed, 27 Jul 2016 05:56:13 +0000 (+0200)
Subject: drm/exynos: dsi: fix pm_runtime_get() result check in dsi power on path
X-Git-Tag: submit/tizen/20160810.050017~29
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=decf4ead5b3ca55344cc974b765510d5d90d16d9;p=platform%2Fkernel%2Flinux-exynos.git

drm/exynos: dsi: fix pm_runtime_get() result check in dsi power on path

pm_runtime_get_sync() might return -EACCES if it is called during system
global suspend/resume procedure. In such case the correctly increases
device usage count. Its return value should be ignored in such case.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Change-Id: Ic4167e2618a037716846f42f91951808dfb42b80
---

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index 36618c03ff00..990aeef92b86 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -1459,7 +1459,7 @@ static int exynos_dsi_poweron(struct exynos_dsi *dsi)
 	int ret, i;
 
 	ret = pm_runtime_get_sync(dsi->dev);
-	if (ret < 0)
+	if (ret < 0 && ret != -EACCES)
 		return ret;
 
 	ret = regulator_bulk_enable(ARRAY_SIZE(dsi->supplies), dsi->supplies);