Thread (2 messages) read the whole thread 2 messages, 2 authors, 2021-05-13

Re: [PATCH v5 07/25] media: rockchip/rga: use pm_runtime_resume_and_get()

From: Heiko Stuebner <heiko@sntech.de>
Date: 2021-05-13 22:38:46
Also in: linux-media, linux-rockchip, lkml

Am Donnerstag, 6. Mai 2021, 17:25:45 CEST schrieb Mauro Carvalho Chehab:
quoted hunk ↗ jump to hunk
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: Ezequiel Garcia <redacted>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 drivers/media/platform/rockchip/rga/rga-buf.c | 3 +--
 drivers/media/platform/rockchip/rga/rga.c     | 4 +++-
 2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/media/platform/rockchip/rga/rga-buf.c b/drivers/media/platform/rockchip/rga/rga-buf.c
index bf9a75b75083..81508ed5abf3 100644
--- a/drivers/media/platform/rockchip/rga/rga-buf.c
+++ b/drivers/media/platform/rockchip/rga/rga-buf.c
@@ -79,9 +79,8 @@ static int rga_buf_start_streaming(struct vb2_queue *q, unsigned int count)
 	struct rockchip_rga *rga = ctx->rga;
 	int ret;
 
-	ret = pm_runtime_get_sync(rga->dev);
+	ret = pm_runtime_resume_and_get(rga->dev);
 	if (ret < 0) {
-		pm_runtime_put_noidle(rga->dev);
 		rga_buf_return_buffers(q, VB2_BUF_STATE_QUEUED);
 		return ret;
 	}
looks ok
quoted hunk ↗ jump to hunk
diff --git a/drivers/media/platform/rockchip/rga/rga.c b/drivers/media/platform/rockchip/rga/rga.c
index 9d122429706e..bf3fd71ec3af 100644
--- a/drivers/media/platform/rockchip/rga/rga.c
+++ b/drivers/media/platform/rockchip/rga/rga.c
@@ -866,7 +866,9 @@ static int rga_probe(struct platform_device *pdev)
 		goto unreg_video_dev;
 	}
 
-	pm_runtime_get_sync(rga->dev);
+	ret = pm_runtime_resume_and_get(rga->dev);
+	if (ret < 0)
+		goto unreg_video_dev;
 
 	rga->version.major = (rga_read(rga, RGA_VERSION_INFO) >> 24) & 0xFF;
 	rga->version.minor = (rga_read(rga, RGA_VERSION_INFO) >> 20) & 0x0F;
hmm, the whole error handling in rga_probe looks fishy to my untrained eyes.

But I guess the easiest will be to apply your patch first and then
investigate and clean up the non-matching alloc - releae calls, so

Reviewed-by: Heiko Stuebner <heiko@sntech.de>




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