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From: Ricardo Ribalda <ribalda@chromium.org>
Date: Mon, 06 May 2024 19:24:46 +0000
Subject: [PATCH v2 1/2] media: bcm2835-unicam: Do not replace IRQ retcode
 during probe
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Message-Id: <20240506-fix-broad-v2-1-e6a2a5c0d609@chromium.org>
References: <20240506-fix-broad-v2-0-e6a2a5c0d609@chromium.org>
In-Reply-To: <20240506-fix-broad-v2-0-e6a2a5c0d609@chromium.org>
To: Mauro Carvalho Chehab <mchehab@kernel.org>, 
 Florian Fainelli <florian.fainelli@broadcom.com>, 
 Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>, 
 Ray Jui <rjui@broadcom.com>, Scott Branden <sbranden@broadcom.com>
Cc: linux-media@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, 
 linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, 
 Hans Verkuil <hverkuil@xs4all.nl>, Ricardo Ribalda <ribalda@chromium.org>

platform_get_irq() cannot return the value 0. It will either return a non-zero
irq or a errcode.

If a errcode is returned, we need to populate the error code upwards. It will
give a more accurate reason of why it failed to the caller, who might decide
to retry later.

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
---
 drivers/media/platform/broadcom/bcm2835-unicam.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/media/platform/broadcom/bcm2835-unicam.c b/drivers/media/platform/broadcom/bcm2835-unicam.c
index bd2bbb53070e..60c0fe956c58 100644
--- a/drivers/media/platform/broadcom/bcm2835-unicam.c
+++ b/drivers/media/platform/broadcom/bcm2835-unicam.c
@@ -2660,9 +2660,8 @@ static int unicam_probe(struct platform_device *pdev)
 	}
 
 	ret = platform_get_irq(pdev, 0);
-	if (ret <= 0) {
+	if (ret < 0) {
 		dev_err(&pdev->dev, "No IRQ resource\n");
-		ret = -EINVAL;
 		goto err_unicam_put;
 	}
 
@@ -2670,7 +2669,6 @@ static int unicam_probe(struct platform_device *pdev)
 			       "unicam_capture0", unicam);
 	if (ret) {
 		dev_err(&pdev->dev, "Unable to request interrupt\n");
-		ret = -EINVAL;
 		goto err_unicam_put;
 	}
 

-- 
2.45.0.rc1.225.g2a3ae87e7f-goog