media: rcar-vin: use pm_runtime_resume_and_get()

Commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter")
added pm_runtime_resume_and_get() in order to automatically handle
dev->power.usage_count decrement on errors.

Use the new API, in order to cleanup the error check logic.

Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/drivers/media/platform/rcar-vin/rcar-csi2.c b/drivers/media/platform/rcar-vin/rcar-csi2.c
index e06cd512aba207a429ef62765cc8d3148ffe1bfa..99bf814eb2a78a30bb97720e3045225433708713 100644 (file)
--- a/drivers/media/platform/rcar-vin/rcar-csi2.c
+++ b/drivers/media/platform/rcar-vin/rcar-csi2.c
@@ -406,10 +406,17 @@ static void rcsi2_enter_standby(struct rcar_csi2 *priv)
        pm_runtime_put(priv->dev);
 }
 
-static void rcsi2_exit_standby(struct rcar_csi2 *priv)
+static int rcsi2_exit_standby(struct rcar_csi2 *priv)
 {
-       pm_runtime_get_sync(priv->dev);
+       int ret;
+
+       ret = pm_runtime_resume_and_get(priv->dev);
+       if (ret < 0)
+               return ret;
+
        reset_control_deassert(priv->rstc);
+
+       return 0;
 }
 
 static int rcsi2_wait_phy_start(struct rcar_csi2 *priv,
@@ -657,7 +664,9 @@ static int rcsi2_start(struct rcar_csi2 *priv)
 {
        int ret;
 
-       rcsi2_exit_standby(priv);
+       ret = rcsi2_exit_standby(priv);
+       if (ret < 0)
+               return ret;
 
        ret = rcsi2_start_receiver(priv);
        if (ret) {

diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c
index f30dafbdf61ca15fe32447fda5b6050e0bd70044..f5f722ab1d4e84617d4658a14896c8d37b4b4601 100644 (file)
--- a/drivers/media/platform/rcar-vin/rcar-dma.c
+++ b/drivers/media/platform/rcar-vin/rcar-dma.c
@@ -1458,11 +1458,9 @@ int rvin_set_channel_routing(struct rvin_dev *vin, u8 chsel)
        u32 vnmc;
        int ret;
 
-       ret = pm_runtime_get_sync(vin->dev);
-       if (ret < 0) {
-               pm_runtime_put_noidle(vin->dev);
+       ret = pm_runtime_resume_and_get(vin->dev);
+       if (ret < 0)
                return ret;
-       }
 
        /* Make register writes take effect immediately. */
        vnmc = rvin_read(vin, VNMC_REG);

diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c
index 457a65bf6b664f05a3d32c69890248f85d3dc819..b1e9f86caa5cff91b9e5bde36f6e8e20ea1dc299 100644 (file)
--- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
+++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
@@ -870,11 +870,9 @@ static int rvin_open(struct file *file)
        struct rvin_dev *vin = video_drvdata(file);
        int ret;
 
-       ret = pm_runtime_get_sync(vin->dev);
-       if (ret < 0) {
-               pm_runtime_put_noidle(vin->dev);
+       ret = pm_runtime_resume_and_get(vin->dev);
+       if (ret < 0)
                return ret;
-       }
 
        ret = mutex_lock_interruptible(&vin->lock);
        if (ret)