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[media] staging: media: omap4iss: fix handling platform_get_irq result

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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: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Andrzej Hajda 2015-09-24 11:00:14 -03:00 committed by Mauro Carvalho Chehab
parent e54560d963
commit 08ed049af5
1 changed files with 3 additions and 2 deletions
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5
drivers/staging/media/omap4iss/iss.c
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@ -1440,12 +1440,13 @@ static int iss_probe(struct platform_device *pdev)
iss_reg_read(iss, OMAP4_ISS_MEM_ISP_SYS1, ISP5_REVISION));
/* Interrupt */
iss->irq_num = platform_get_irq(pdev, 0);
if (iss->irq_num <= 0) {
ret = platform_get_irq(pdev, 0);
if (ret <= 0) {
dev_err(iss->dev, "No IRQ resource\n");
ret = -ENODEV;
goto error_iss;
}
iss->irq_num = ret;
if (devm_request_irq(iss->dev, iss->irq_num, iss_isr, IRQF_SHARED,
"OMAP4 ISS", iss)) {