linux-kernel - [PATCH v4 2/2] irqchip/gic-v3-its: remove BUG_ON in its_vpe_irq_domain

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Date: Sat, 13 Apr 2024 14:40:51 +0800
From: Guanrui Huang <guanrui.huang@...ux.alibaba.com>
To: maz@...nel.org
Cc: yuzenghui@...wei.com,
	shannon.zhao@...ux.alibaba.com,
	tglx@...utronix.de,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Guanrui Huang <guanrui.huang@...ux.alibaba.com>
Subject: [PATCH v4 2/2] irqchip/gic-v3-its: remove BUG_ON in its_vpe_irq_domain_alloc

If vm is NULL in here, that means caller has a bug.
BUG_ON in here is useless, this will paper over bug.

So just remove this check.

Signed-off-by: Guanrui Huang <guanrui.huang@...ux.alibaba.com>
---
 drivers/irqchip/irq-gic-v3-its.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 2305f6b524a9..55c83e19719d 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -4521,8 +4521,6 @@ static int its_vpe_irq_domain_alloc(struct irq_domain *domain, unsigned int virq
 	struct page *vprop_page;
 	int base, nr_ids, i, err = 0;
 
-	BUG_ON(!vm);
-
 	bitmap = its_lpi_alloc(roundup_pow_of_two(nr_irqs), &base, &nr_ids);
 	if (!bitmap)
 		return -ENOMEM;
-- 
2.36.1