Re: [PATCH] PCI: keystone: fix error handling of irq_of_parse_and_map

From: Murali Karicheri
Date: Wed Nov 19 2014 - 13:02:38 EST


On 11/14/2014 05:19 PM, Dmitry Torokhov wrote:
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@xxxxxxxxxxxx>
---

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) {
Good catch!

Acked-By: Murali Karicheri <m-karicheri2@xxxxxx>

--
Murali Karicheri
Linux Kernel, Texas Instruments
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