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.ha...@samsung.com>
---
Hi,

To avoid problems with too many mail recipients I have sent whole
patchset only to LKML. Anyway patches have no dependencies.

Regards
Andrzej
---
 drivers/media/platform/am437x/am437x-vpfe.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/am437x/am437x-vpfe.c 
b/drivers/media/platform/am437x/am437x-vpfe.c
index c8447fa..c9cbb60 100644
--- a/drivers/media/platform/am437x/am437x-vpfe.c
+++ b/drivers/media/platform/am437x/am437x-vpfe.c
@@ -2546,11 +2546,12 @@ static int vpfe_probe(struct platform_device *pdev)
        if (IS_ERR(ccdc->ccdc_cfg.base_addr))
                return PTR_ERR(ccdc->ccdc_cfg.base_addr);
 
-       vpfe->irq = platform_get_irq(pdev, 0);
-       if (vpfe->irq <= 0) {
+       ret = platform_get_irq(pdev, 0);
+       if (ret <= 0) {
                dev_err(&pdev->dev, "No IRQ resource\n");
                return -ENODEV;
        }
+       vpfe->irq = ret;
 
        ret = devm_request_irq(vpfe->pdev, vpfe->irq, vpfe_isr, 0,
                               "vpfe_capture0", vpfe);
-- 
1.9.1

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