[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 559fab2..fe69eae 100644 (file)
--- 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 = {