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authorLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>2021-12-24 19:13:31 +0300
committerWill Deacon <will@kernel.org>2022-02-08 17:25:35 +0300
commitadbb8a1edecda677c5f031b44da25680a08a163e (patch)
tree12d9a7c60a624ed68e2ff310cb46699e34fb8aec /drivers/perf/arm-ccn.c
parentdfd42facf1e4ada021b939b4e19c935dcdd55566 (diff)
downloadlinux-adbb8a1edecda677c5f031b44da25680a08a163e.tar.xz
perf/arm-ccn: Use platform_get_irq() to get the interrupt
platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static allocation of IRQ resources in DT core code, this causes an issue when using hierarchical interrupt domains using "interrupts" property in the node as this bypasses the hierarchical setup and messes up the irq chaining. In preparation for removal of static setup of IRQ resource from DT core code use platform_get_irq(). Link: https://lore.kernel.org/r/20211224161334.31123-1-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/perf/arm-ccn.c')
-rw-r--r--drivers/perf/arm-ccn.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/perf/arm-ccn.c b/drivers/perf/arm-ccn.c
index a96c31604545..40b352e8aa7f 100644
--- a/drivers/perf/arm-ccn.c
+++ b/drivers/perf/arm-ccn.c
@@ -1460,8 +1460,7 @@ static irqreturn_t arm_ccn_irq_handler(int irq, void *dev_id)
static int arm_ccn_probe(struct platform_device *pdev)
{
struct arm_ccn *ccn;
- struct resource *res;
- unsigned int irq;
+ int irq;
int err;
ccn = devm_kzalloc(&pdev->dev, sizeof(*ccn), GFP_KERNEL);
@@ -1474,10 +1473,9 @@ static int arm_ccn_probe(struct platform_device *pdev)
if (IS_ERR(ccn->base))
return PTR_ERR(ccn->base);
- res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (!res)
- return -EINVAL;
- irq = res->start;
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
/* Check if we can use the interrupt */
writel(CCN_MN_ERRINT_STATUS__PMU_EVENTS__DISABLE,