linux-kernel - [PATCH v4 65/79] media: camss: use pm_runtime_resume_and

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Date:   Wed, 28 Apr 2021 16:52:26 +0200
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     linuxarm@...wei.com, mauro.chehab@...wei.com,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Robert Foss <robert.foss@...aro.org>,
        Todor Tomov <todor.too@...il.com>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org
Subject: [PATCH v4 65/79] media: camss: 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: Robert Foss <robert.foss@...aro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 drivers/media/platform/qcom/camss/camss-csid.c   | 6 ++----
 drivers/media/platform/qcom/camss/camss-csiphy.c | 6 ++----
 drivers/media/platform/qcom/camss/camss-ispif.c  | 6 ++----
 drivers/media/platform/qcom/camss/camss-vfe.c    | 5 +++--
 4 files changed, 9 insertions(+), 14 deletions(-)

diff --git a/drivers/media/platform/qcom/camss/camss-csid.c b/drivers/media/platform/qcom/camss/camss-csid.c
index cc11fbfdae13..d2a7f2a64f26 100644
--- a/drivers/media/platform/qcom/camss/camss-csid.c
+++ b/drivers/media/platform/qcom/camss/camss-csid.c
@@ -156,11 +156,9 @@ static int csid_set_power(struct v4l2_subdev *sd, int on)
 	int ret;
 
 	if (on) {
-		ret = pm_runtime_get_sync(dev);
-		if (ret < 0) {
-			pm_runtime_put_sync(dev);
+		ret = pm_runtime_resume_and_get(dev);
+		if (ret < 0)
 			return ret;
-		}
 
 		ret = regulator_enable(csid->vdda);
 		if (ret < 0) {
diff --git a/drivers/media/platform/qcom/camss/camss-csiphy.c b/drivers/media/platform/qcom/camss/camss-csiphy.c
index b3c3bf19e522..8e18b8e668cf 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy.c
+++ b/drivers/media/platform/qcom/camss/camss-csiphy.c
@@ -197,11 +197,9 @@ static int csiphy_set_power(struct v4l2_subdev *sd, int on)
 	if (on) {
 		int ret;
 
-		ret = pm_runtime_get_sync(dev);
-		if (ret < 0) {
-			pm_runtime_put_sync(dev);
+		ret = pm_runtime_resume_and_get(dev);
+		if (ret < 0)
 			return ret;
-		}
 
 		ret = csiphy_set_clock_rates(csiphy);
 		if (ret < 0) {
diff --git a/drivers/media/platform/qcom/camss/camss-ispif.c b/drivers/media/platform/qcom/camss/camss-ispif.c
index 37611c8861da..d9907742ba79 100644
--- a/drivers/media/platform/qcom/camss/camss-ispif.c
+++ b/drivers/media/platform/qcom/camss/camss-ispif.c
@@ -372,11 +372,9 @@ static int ispif_set_power(struct v4l2_subdev *sd, int on)
 			goto exit;
 		}
 
-		ret = pm_runtime_get_sync(dev);
-		if (ret < 0) {
-			pm_runtime_put_sync(dev);
+		ret = pm_runtime_resume_and_get(dev);
+		if (ret < 0)
 			goto exit;
-		}
 
 		ret = camss_enable_clocks(ispif->nclocks, ispif->clock, dev);
 		if (ret < 0) {
diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c
index 15695fd466c4..cf743e61f798 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe.c
@@ -584,9 +584,9 @@ static int vfe_get(struct vfe_device *vfe)
 		if (ret < 0)
 			goto error_pm_domain;
 
-		ret = pm_runtime_get_sync(vfe->camss->dev);
+		ret = pm_runtime_resume_and_get(vfe->camss->dev);
 		if (ret < 0)
-			goto error_pm_runtime_get;
+			goto error_domain_off;
 
 		ret = vfe_set_clock_rates(vfe);
 		if (ret < 0)
@@ -620,6 +620,7 @@ static int vfe_get(struct vfe_device *vfe)
 
 error_pm_runtime_get:
 	pm_runtime_put_sync(vfe->camss->dev);
+error_domain_off:
 	vfe->ops->pm_domain_off(vfe);
 
 error_pm_domain:
-- 
2.30.2