linux-kernel - [V1,7/7] media: mtk-jpeg: refactor hw dev initializaiton

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Thu, 23 Feb 2023 16:13:12 +0800
From:   Irui Wang <irui.wang@...iatek.com>
To:     Hans Verkuil <hverkuil-cisco@...all.nl>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <angelogioacchino.delregno@...labora.com>,
        <nicolas.dufresne@...labora.com>, kyrie wu <kyrie.wu@...iatek.com>
CC:     <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        <linux-media@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        Tomasz Figa <tfiga@...omium.org>, <xia.jiang@...iatek.com>,
        <maoguang.meng@...iatek.com>,
        Yunfei Dong <yunfei.dong@...iatek.com>,
        "Irui Wang" <irui.wang@...iatek.com>
Subject: [V1,7/7] media: mtk-jpeg: refactor hw dev initializaiton

From: kyrie wu <kyrie.wu@...iatek.com>

Add a atomic_t variable for initialization of hw dev.

Signed-off-by: kyrie wu <kyrie.wu@...iatek.com>
Signed-off-by: irui wang <irui.wang@...iatek.com>
---
 drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c |  1 +
 drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h |  2 ++
 .../media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c   | 12 ++++--------
 .../media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c   | 12 ++++--------
 4 files changed, 11 insertions(+), 16 deletions(-)

diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
index ab06c1ee80d4..1dd03938df7e 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
@@ -1742,6 +1742,7 @@ static int mtk_jpeg_probe(struct platform_device *pdev)
 			num_child++;
 
 		atomic_set(&jpeg->hw_rdy, num_child);
+		atomic_set(&jpeg->hw_index, 0);
 
 		jpeg->workqueue = alloc_ordered_workqueue(MTK_JPEG_NAME,
 							  WQ_MEM_RECLAIM
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h
index 89242e407dc9..8ba6e757e11a 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h
@@ -208,6 +208,7 @@ struct mtk_jpegdec_comp_dev {
  * @hw_rdy:		jpg hw ready flag
  * @reg_decbase:	jpg decode register base addr
  * @dec_hw_dev:	jpg decode hardware device
+ * @hw_index:		jpg hw index
  */
 struct mtk_jpeg_dev {
 	struct mutex		lock;
@@ -229,6 +230,7 @@ struct mtk_jpeg_dev {
 
 	void __iomem *reg_decbase[MTK_JPEGDEC_HW_MAX];
 	struct mtk_jpegdec_comp_dev *dec_hw_dev[MTK_JPEGDEC_HW_MAX];
+	atomic_t hw_index;
 };
 
 /**
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c
index b7c2de2489b0..869068fac5e2 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c
@@ -638,14 +638,10 @@ static int mtk_jpegdec_hw_probe(struct platform_device *pdev)
 		return dev_err_probe(&pdev->dev, ret,
 				     "Failed to register JPEGDEC irq handler.\n");
 
-	for (i = 0; i < MTK_JPEGDEC_HW_MAX; i++) {
-		if (master_dev->dec_hw_dev[i])
-			continue;
-
-		master_dev->dec_hw_dev[i] = dev;
-		master_dev->reg_decbase[i] = dev->reg_base;
-		dev->master_dev = master_dev;
-	}
+	i = atomic_add_return(1, &master_dev->hw_index) - 1;
+	master_dev->dec_hw_dev[i] = dev;
+	master_dev->reg_decbase[i] = dev->reg_base;
+	dev->master_dev = master_dev;
 
 	platform_set_drvdata(pdev, dev);
 	pm_runtime_enable(&pdev->dev);
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c
index e35ee1bdce3d..71e85b4bbf12 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c
@@ -362,14 +362,10 @@ static int mtk_jpegenc_hw_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	for (i = 0; i < MTK_JPEGENC_HW_MAX; i++) {
-		if (master_dev->enc_hw_dev[i])
-			continue;
-
-		master_dev->enc_hw_dev[i] = dev;
-		master_dev->reg_encbase[i] = dev->reg_base;
-		dev->master_dev = master_dev;
-	}
+	i = atomic_add_return(1, &master_dev->hw_index) - 1;
+	master_dev->enc_hw_dev[i] = dev;
+	master_dev->reg_encbase[i] = dev->reg_base;
+	dev->master_dev = master_dev;
 
 	platform_set_drvdata(pdev, dev);
 	pm_runtime_enable(&pdev->dev);
-- 
2.18.0