linux-kernel - [PATCH 04/15] media: stm32: dcmipp: use v4l2_subdev_is

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Message-ID: <20241008-csi_dcmipp_mp25-v1-4-e3fd0ed54b31@foss.st.com>
Date: Tue, 8 Oct 2024 13:18:06 +0200
From: Alain Volmat <alain.volmat@...s.st.com>
To: Hugues Fruchet <hugues.fruchet@...s.st.com>,
        Mauro Carvalho Chehab
	<mchehab@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre
 Torgue <alexandre.torgue@...s.st.com>,
        Hans Verkuil
	<hverkuil-cisco@...all.nl>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Rob
 Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor
 Dooley <conor+dt@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>
CC: <linux-media@...r.kernel.org>, <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, Alain Volmat <alain.volmat@...s.st.com>
Subject: [PATCH 04/15] media: stm32: dcmipp: use v4l2_subdev_is_streaming

Rely on v4l2_subdev_is_streaming in order to know if the subdev
is streaming or not instead of relying on a local variable.

Signed-off-by: Alain Volmat <alain.volmat@...s.st.com>
---
 drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-byteproc.c | 6 +-----
 drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-parallel.c | 5 +----
 2 files changed, 2 insertions(+), 9 deletions(-)

diff --git a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-byteproc.c b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-byteproc.c
index 5a361ad6b023..50500112eab9 100644
--- a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-byteproc.c
+++ b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-byteproc.c
@@ -78,7 +78,6 @@ struct dcmipp_byteproc_device {
 	struct v4l2_subdev sd;
 	struct device *dev;
 	void __iomem *regs;
-	bool streaming;
 };
 
 static const struct v4l2_mbus_framefmt fmt_default = {
@@ -239,11 +238,10 @@ static int dcmipp_byteproc_set_fmt(struct v4l2_subdev *sd,
 				   struct v4l2_subdev_state *sd_state,
 				   struct v4l2_subdev_format *fmt)
 {
-	struct dcmipp_byteproc_device *byteproc = v4l2_get_subdevdata(sd);
 	struct v4l2_mbus_framefmt *mf;
 	struct v4l2_rect *crop, *compose;
 
-	if (byteproc->streaming)
+	if (v4l2_subdev_is_streaming(sd))
 		return -EBUSY;
 
 	mf = v4l2_subdev_state_get_format(sd_state, fmt->pad);
@@ -495,8 +493,6 @@ static int dcmipp_byteproc_s_stream(struct v4l2_subdev *sd, int enable)
 		}
 	}
 
-	byteproc->streaming = enable;
-
 	return 0;
 }
 
diff --git a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-parallel.c b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-parallel.c
index 62c5c3331cfe..05e8897ae37a 100644
--- a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-parallel.c
+++ b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-parallel.c
@@ -129,7 +129,6 @@ struct dcmipp_par_device {
 	struct v4l2_subdev sd;
 	struct device *dev;
 	void __iomem *regs;
-	bool streaming;
 };
 
 static const struct v4l2_mbus_framefmt fmt_default = {
@@ -230,7 +229,7 @@ static int dcmipp_par_set_fmt(struct v4l2_subdev *sd,
 	struct dcmipp_par_device *par = v4l2_get_subdevdata(sd);
 	struct v4l2_mbus_framefmt *mf;
 
-	if (par->streaming)
+	if (v4l2_subdev_is_streaming(sd))
 		return -EBUSY;
 
 	mf = v4l2_subdev_state_get_format(sd_state, fmt->pad);
@@ -370,8 +369,6 @@ static int dcmipp_par_s_stream(struct v4l2_subdev *sd, int enable)
 		reg_clear(par, DCMIPP_PRCR, DCMIPP_PRCR_ENABLE);
 	}
 
-	par->streaming = enable;
-
 	return ret;
 }
 

-- 
2.25.1