linux-kernel - [PATCH] PCI: keystone: fix error handling of irq_of_parse_and

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Message-ID: <20141114221903.GA38539@dtor-ws>
Date:	Fri, 14 Nov 2014 14:19:03 -0800
From:	Dmitry Torokhov <dtor@...omium.org>
To:	Murali Karicheri <m-karicheri2@...com>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Arnd Bergmann <arnd@...db.de>,
	Wolfram Sang <wsa@...-dreams.de>, linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] PCI: keystone: fix error handling of irq_of_parse_and_map

Return value of irq_of_parse_and_map() is unsigned int, with 0
indicating failure, so testing for negative result never works.

Signed-off-by: Dmitry Torokhov <dtor@...omium.org>
---

Not tested, found by casual code inspection.

 drivers/pci/host/pci-keystone.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/host/pci-keystone.c
index 8a27078..f2bd48d 100644
--- a/drivers/pci/host/pci-keystone.c
+++ b/drivers/pci/host/pci-keystone.c
@@ -197,7 +197,7 @@ static int ks_pcie_get_irq_controller_info(struct keystone_pcie *ks_pcie,
 	 */
 	for (temp = 0; temp < max_host_irqs; temp++) {
 		host_irqs[temp] = irq_of_parse_and_map(*np_temp, temp);
-		if (host_irqs[temp] < 0)
+		if (!host_irqs[temp])
 			break;
 	}
 	if (temp) {
-- 
2.1.0.rc2.206.gedb03e5


-- 
Dmitry
--
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