[media] v4l: omap3isp: Fix handling platform_get_irq result
The function can return negative value. The problem has been detected using proposed semantic patch scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1]. [1]: http://permalink.gmane.org/gmane.linux.kernel/2046107 Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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@ -2528,12 +2528,13 @@ static int isp_probe(struct platform_device *pdev)
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}
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/* Interrupt */
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isp->irq_num = platform_get_irq(pdev, 0);
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if (isp->irq_num <= 0) {
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ret = platform_get_irq(pdev, 0);
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if (ret <= 0) {
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dev_err(isp->dev, "No IRQ resource\n");
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ret = -ENODEV;
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goto error_iommu;
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}
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isp->irq_num = ret;
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if (devm_request_irq(isp->dev, isp->irq_num, isp_isr, IRQF_SHARED,
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"OMAP3 ISP", isp)) {
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