The return value 0 from acpi_register_gsi() means irq mapping failed.
So, we should process this case in else branch.
Signed-off-by: MaJun <majun258@xxxxxxxxxx>
---
drivers/acpi/resource.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index 56241eb..9918326 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -416,7 +416,7 @@ static void acpi_dev_get_irqresource(struct resource *res, u32 gsi,
res->flags = acpi_dev_irq_flags(triggering, polarity, shareable);
irq = acpi_register_gsi(NULL, gsi, triggering, polarity);
- if (irq >= 0) {
+ if (irq > 0) {
res->start = irq;
res->end = irq;
} else {
--
1.7.12.4
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