From: Prathyush K <prathyush.k@samsung.com>
Date: Wed, 7 Aug 2013 11:53:04 +0000 (-0300)
Subject: [media] exynos-gsc: fix s2r functionality
X-Git-Tag: firefly_0821_release~176^2~3573^2~1435
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f9fa906f00388bf326d010f36bc905cbd0b6554f;p=firefly-linux-kernel-4.4.55.git

[media] exynos-gsc: fix s2r functionality

When gsc is in runtime suspended state, there is no need to call
m2m_suspend during suspend and similarly, there is no need to call
m2m_resume during resume if already in runtime suspended state. This
patch adds the necessary conditions to achieve this.

Signed-off-by: Prathyush K <prathyush.k@samsung.com>
Signed-off-by: Arun Mankuzhi <arun.m@samsung.com>
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
---

diff --git a/drivers/media/platform/exynos-gsc/gsc-core.c b/drivers/media/platform/exynos-gsc/gsc-core.c
index 559fab2a2d67..fe69eaeb907a 100644
--- a/drivers/media/platform/exynos-gsc/gsc-core.c
+++ b/drivers/media/platform/exynos-gsc/gsc-core.c
@@ -1210,12 +1210,12 @@ static int gsc_resume(struct device *dev)
 		spin_unlock_irqrestore(&gsc->slock, flags);
 		return 0;
 	}
-	gsc_hw_set_sw_reset(gsc);
-	gsc_wait_reset(gsc);
-
 	spin_unlock_irqrestore(&gsc->slock, flags);
 
-	return gsc_m2m_resume(gsc);
+	if (!pm_runtime_suspended(dev))
+		return gsc_runtime_resume(dev);
+
+	return 0;
 }
 
 static int gsc_suspend(struct device *dev)
@@ -1227,7 +1227,10 @@ static int gsc_suspend(struct device *dev)
 	if (test_and_set_bit(ST_SUSPEND, &gsc->state))
 		return 0;
 
-	return gsc_m2m_suspend(gsc);
+	if (!pm_runtime_suspended(dev))
+		return gsc_runtime_suspend(dev);
+
+	return 0;
 }
 
 static const struct dev_pm_ops gsc_pm_ops = {