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From:   cgel.zte@gmail.com
To:     prabhakar.csengg@gmail.com
Cc:     mchehab@kernel.org, linux-media@vger.kernel.org,
        linux-kernel@vger.kernel.org, Minghao Chi <chi.minghao@zte.com.cn>,
        Zeal Robot <zealci@zte.com.cn>
Subject: [PATCH] media:davinci:vpbe_display: Use platform_get_irq() to get the interrupt
Date:   Wed,  9 Mar 2022 03:56:48 +0000
Message-Id: <20220309035648.2080945-1-chi.minghao@zte.com.cn>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
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From: Minghao Chi (CGEL ZTE) <chi.minghao@zte.com.cn>

It is not recommened to use platform_get_resource(pdev, IORESOURCE_IRQ)
for requesting IRQ's resources any more, as they can be not ready yet in
case of DT-booting.

platform_get_irq() instead is a recommended way for getting IRQ even if
it was not retrieved earlier.

It also makes code simpler because we're getting "int" value right away
and no conversion from resource to int is required.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi (CGEL ZTE) <chi.minghao@zte.com.cn>
---
 drivers/media/platform/davinci/vpbe_display.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/davinci/vpbe_display.c b/drivers/media/platform/davinci/vpbe_display.c
index bf3c3e76b921..e0aabcb333ac 100644
--- a/drivers/media/platform/davinci/vpbe_display.c
+++ b/drivers/media/platform/davinci/vpbe_display.c
@@ -1363,7 +1363,6 @@ static int vpbe_display_probe(struct platform_device *pdev)
 {
 	struct vpbe_display *disp_dev;
 	struct v4l2_device *v4l2_dev;
-	struct resource *res = NULL;
 	struct vb2_queue *q;
 	int k;
 	int i;
@@ -1405,14 +1404,13 @@ static int vpbe_display_probe(struct platform_device *pdev)
 		}
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!res) {
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
 		v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
 		err = -ENODEV;
 		goto probe_out;
 	}
 
-	irq = res->start;
 	err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
 			       VPBE_DISPLAY_DRIVER, disp_dev);
 	if (err) {
-- 
2.25.1