linux-kernel - [PATCH 09/13] media: mtk-vcodec: Drop unnecessary call to platform_get

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Date:   Thu, 23 Dec 2021 17:30:10 +0000
From:   Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
To:     linux-media@...r.kernel.org,
        Tiffany Lin <tiffany.lin@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     Hans Verkuil <hverkuil-cisco@...all.nl>,
        Rob Herring <robh+dt@...nel.org>, linux-kernel@...r.kernel.org,
        Prabhakar <prabhakar.csengg@...il.com>,
        linux-renesas-soc@...r.kernel.org,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: [PATCH 09/13] media: mtk-vcodec: Drop unnecessary call to platform_get_resource()

mtk_vcodec_probe() calls platform_get_resource(pdev, IORESOURCE_IRQ, ..)
to check if IRQ resource exists and later calls platform_get_irq(pdev, ..)
to get the actual IRQ.

This patch drops an unnecessary call to platform_get_resource() and
checks the return value of platform_get_irq(pdev, ..) to check if the
IRQ line is valid.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 .../media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c    | 11 ++++-------
 .../media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c    | 10 +++-------
 2 files changed, 7 insertions(+), 14 deletions(-)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
index 40c39e1e596b..1509c2a4de84 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
@@ -200,7 +200,6 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 {
 	struct mtk_vcodec_dev *dev;
 	struct video_device *vfd_dec;
-	struct resource *res;
 	phandle rproc_phandle;
 	enum mtk_vcodec_fw_type fw_type;
 	int i, ret;
@@ -244,14 +243,12 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 		mtk_v4l2_debug(2, "reg[%d] base=%p", i, dev->reg_base[i]);
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (res == NULL) {
-		dev_err(&pdev->dev, "failed to get irq resource");
-		ret = -ENOENT;
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
 		goto err_res;
-	}
 
-	dev->dec_irq = platform_get_irq(pdev, 0);
+	dev->dec_irq = ret;
+
 	irq_set_status_flags(dev->dec_irq, IRQ_NOAUTOEN);
 	ret = devm_request_irq(&pdev->dev, dev->dec_irq,
 			mtk_vcodec_dec_irq_handler, 0, pdev->name, dev);
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
index aeaecb8d416e..86e70d826754 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
@@ -236,7 +236,6 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 {
 	struct mtk_vcodec_dev *dev;
 	struct video_device *vfd_enc;
-	struct resource *res;
 	phandle rproc_phandle;
 	enum mtk_vcodec_fw_type fw_type;
 	int ret;
@@ -280,14 +279,11 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 		goto err_res;
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (res == NULL) {
-		dev_err(&pdev->dev, "failed to get irq resource");
-		ret = -ENOENT;
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
 		goto err_res;
-	}
 
-	dev->enc_irq = platform_get_irq(pdev, 0);
+	dev->enc_irq = ret;
 	irq_set_status_flags(dev->enc_irq, IRQ_NOAUTOEN);
 	ret = devm_request_irq(&pdev->dev, dev->enc_irq,
 			       mtk_vcodec_enc_irq_handler,
-- 
2.17.1