iommu/fsl_pamu: Replace NO_IRQ by 0

NO_IRQ is used to check the return of irq_of_parse_and_map().

On some architecture NO_IRQ is 0, on other architectures it is -1.

irq_of_parse_and_map() returns 0 on error, independent of NO_IRQ.

So use 0 instead of using NO_IRQ.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/2a2570a8d12c80a7d36837b6c586daa708ca09d7.1665033732.git.christophe.leroy@csgroup.eu
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/fsl_pamu.c b/drivers/iommu/fsl_pamu.c
index 0d03f83..1b53d2d 100644 (file)
--- a/drivers/iommu/fsl_pamu.c
+++ b/drivers/iommu/fsl_pamu.c
@@ -779,7 +779,7 @@ static int fsl_pamu_probe(struct platform_device *pdev)
        of_get_address(dev->of_node, 0, &size, NULL);
 
        irq = irq_of_parse_and_map(dev->of_node, 0);
-       if (irq == NO_IRQ) {
+       if (!irq) {
                dev_warn(dev, "no interrupts listed in PAMU node\n");
                goto error;
        }
@@ -903,7 +903,7 @@ static int fsl_pamu_probe(struct platform_device *pdev)
        return 0;
 
 error:
-       if (irq != NO_IRQ)
+       if (irq)
                free_irq(irq, data);
 
        kfree_sensitive(data);