linux-kernel - [PATCH] irqchip/sifive-plic: One function call less in __plic

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Date: Tue, 26 Dec 2023 21:42:22 +0100
From: Markus Elfring <Markus.Elfring@....de>
To: linux-riscv@...ts.infradead.org, kernel-janitors@...r.kernel.org,
 Palmer Dabbelt <palmer@...belt.com>, Paul Walmsley
 <paul.walmsley@...ive.com>, Thomas Gleixner <tglx@...utronix.de>
Cc: LKML <linux-kernel@...r.kernel.org>, cocci@...ia.fr
Subject: [PATCH] irqchip/sifive-plic: One function call less in __plic_init()
 after error detection

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 26 Dec 2023 21:34:47 +0100

The kfree() function was called in one case by the
__plic_init() function during error handling
even if the passed data structure member contained a null pointer.
This issue was detected by using the Coccinelle software.

Thus use an other label.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/irqchip/irq-sifive-plic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-sifive-plic.c b/drivers/irqchip/irq-sifive-plic.c
index 5b7bc4fd9517..e9e3ee2d6440 100644
--- a/drivers/irqchip/irq-sifive-plic.c
+++ b/drivers/irqchip/irq-sifive-plic.c
@@ -437,7 +437,7 @@ static int __init __plic_init(struct device_node *node,

 	priv->prio_save = bitmap_alloc(nr_irqs, GFP_KERNEL);
 	if (!priv->prio_save)
-		goto out_free_priority_reg;
+		goto out_iounmap;

 	nr_contexts = of_irq_count(node);
 	if (WARN_ON(!nr_contexts))
--
2.43.0