[PATCH] [media] coda/imx-vdoa: Check for platform_get_resource() error

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From: Fabio Estevam <fabio.estevam@xxxxxxx>

platform_get_resource() may fail and in this case a NULL dereference
will occur.

Prevent this from happening by returning an error on
platform_get_resource() failure. 

Fixes: b0444f18e0b18abce ("[media] coda: add i.MX6 VDOA driver")
Signed-off-by: Fabio Estevam <fabio.estevam@xxxxxxx>
---
 drivers/media/platform/coda/imx-vdoa.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/platform/coda/imx-vdoa.c b/drivers/media/platform/coda/imx-vdoa.c
index df9b716..8eb3e0c 100644
--- a/drivers/media/platform/coda/imx-vdoa.c
+++ b/drivers/media/platform/coda/imx-vdoa.c
@@ -314,6 +314,8 @@ static int vdoa_probe(struct platform_device *pdev)
 		return PTR_ERR(vdoa->regs);
 
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!res)
+		return -EINVAL;
 	vdoa->irq = devm_request_threaded_irq(&pdev->dev, res->start, NULL,
 					vdoa_irq_handler, IRQF_ONESHOT,
 					"vdoa", vdoa);
-- 
2.7.4




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