[PATCH 08/10] PCI: altera: Fix platform_get_irq() error handling

[Fabio Estevam <fabio.estevam@nxp.com>]

platform_get_irq() returns a negative number on failure, so
adjust the logic to detect such condition and propagate
the real error value on failure.

Cc: Ley Foon Tan <lftan@altera.com>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
---
 drivers/pci/host/pcie-altera.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/host/pcie-altera.c
index 6fced59..b468b8ccc 100644
--- a/drivers/pci/host/pcie-altera.c
+++ b/drivers/pci/host/pcie-altera.c
@@ -558,9 +558,9 @@ static int altera_pcie_parse_dt(struct altera_pcie *pcie)
 
 	/* setup IRQ */
 	pcie->irq = platform_get_irq(pdev, 0);
-	if (pcie->irq <= 0) {
+	if (pcie->irq < 0) {
 		dev_err(dev, "failed to get IRQ: %d\n", pcie->irq);
-		return -EINVAL;
+		return pcie->irq;
 	}
 
 	irq_set_chained_handler_and_data(pcie->irq, altera_pcie_isr, pcie);
-- 
2.7.4