diff mbox

[06/11] irqchip/gic: Don't initialise chip if mapping IO space fails

Message ID 1462893285-13515-7-git-send-email-jonathanh@nvidia.com
State Accepted, archived
Delegated to: Jon Hunter
Headers show

Commit Message

Jon Hunter May 10, 2016, 3:14 p.m. UTC 
If we fail to map the address space for the GIC distributor or CPU
interface, then don't attempt to initialise the chip, just WARN and
return.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
---
 drivers/irqchip/irq-gic.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
diff mbox

Patch

diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 30d05a4639e4..070c87bbfce8 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -1225,10 +1225,14 @@  gic_of_init(struct device_node *node, struct device_node *parent)
 		return -ENODEV;
 
 	dist_base = of_iomap(node, 0);
-	WARN(!dist_base, "unable to map gic dist registers\n");
+	if (WARN(!dist_base, "unable to map gic dist registers\n"))
+		return -ENOMEM;
 
 	cpu_base = of_iomap(node, 1);
-	WARN(!cpu_base, "unable to map gic cpu registers\n");
+	if (WARN(!cpu_base, "unable to map gic cpu registers\n")) {
+		iounmap(dist_base);
+		return -ENOMEM;
+	}
 
 	/*
 	 * Disable split EOI/Deactivate if either HYP is not available