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Message-ID: <15059507-6422-4333-94ca-e8e8840bd289@sabinyo.mountain>
Date: Wed, 16 Jul 2025 14:43:45 -0500
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Nam Cao <namcao@...utronix.de>
Cc: Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
kernel-janitors@...r.kernel.org
Subject: [PATCH next] irqchip/ls-scfg-msi: Fix NULL dereference in error
handling
The call to irq_domain_remove(msi_data->parent); was accidentally left
behind during a code refactor. It's not necessary to free
"msi_data->parent" because it is NULL and, in fact, trying to free it
will lead to a NULL pointer dereference. Delete the unnecessary code.
Fixes: 94b59d5f567a ("irqchip/ls-scfg-msi: Switch to use msi_create_parent_irq_domain()")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
drivers/irqchip/irq-ls-scfg-msi.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/irqchip/irq-ls-scfg-msi.c b/drivers/irqchip/irq-ls-scfg-msi.c
index 7eca751d6548..4910f364e568 100644
--- a/drivers/irqchip/irq-ls-scfg-msi.c
+++ b/drivers/irqchip/irq-ls-scfg-msi.c
@@ -226,7 +226,6 @@ static int ls_scfg_msi_domains_init(struct ls_scfg_msi *msi_data)
msi_data->parent = msi_create_parent_irq_domain(&info, &ls_scfg_msi_parent_ops);
if (!msi_data->parent) {
dev_err(&msi_data->pdev->dev, "failed to create MSI domain\n");
- irq_domain_remove(msi_data->parent);
return -ENOMEM;
}
--
2.47.2
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