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

[Fabio Estevam]

From: Fabio Estevam <fabio.este...@nxp.com>

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.este...@nxp.com>
---
 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