[PATCH 1/3] media: bcm2835-unicam: Fix error handling for platform_get_irq

[Ricardo Ribalda]

platform_get_irq() cannot return the value 0.

If it returns -EPROBE_DEFER, we need to populate the error code upwards
to retry probing once the irq handler is ready.

Signed-off-by: Ricardo Ribalda <ribalda at chromium.org>
---
 drivers/media/platform/broadcom/bcm2835-unicam.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/broadcom/bcm2835-unicam.c b/drivers/media/platform/broadcom/bcm2835-unicam.c
index bd2bbb53070e..2a3a27ac70ba 100644
--- a/drivers/media/platform/broadcom/bcm2835-unicam.c
+++ b/drivers/media/platform/broadcom/bcm2835-unicam.c
@@ -2660,9 +2660,10 @@ 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;
+		if (ret != -EPROBE_DEFER)
+			ret = -EINVAL;
 		goto err_unicam_put;
 	}
 

-- 
2.44.0.769.g3c40516874-goog