linux-kernel - [PATCH] mips: Vr41xx: add missing iounmap() on error in vr41xx_pciu

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Message-ID: <20201028091548.136303-1-miaoqinglang@huawei.com>
Date:   Wed, 28 Oct 2020 17:15:48 +0800
From:   Qinglang Miao <miaoqinglang@...wei.com>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>
CC:     <linux-mips@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        "Qinglang Miao" <miaoqinglang@...wei.com>
Subject: [PATCH] mips: Vr41xx: add missing iounmap() on error in vr41xx_pciu_init()

add missing iounmap() of pciu_base on error when failed to init
io_map_base.

Signed-off-by: Qinglang Miao <miaoqinglang@...wei.com>
---
 arch/mips/pci/pci-vr41xx.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/mips/pci/pci-vr41xx.c b/arch/mips/pci/pci-vr41xx.c
index 1fa4e1014..4f250c55b 100644
--- a/arch/mips/pci/pci-vr41xx.c
+++ b/arch/mips/pci/pci-vr41xx.c
@@ -293,8 +293,10 @@ static int __init vr41xx_pciu_init(void)
 		master = setup->master_io;
 		io_map_base = ioremap(master->bus_base_address,
 				      resource_size(res));
-		if (!io_map_base)
+		if (!io_map_base) {
+			iounmap(pciu_base);
 			return -EBUSY;
+		}
 
 		vr41xx_pci_controller.io_map_base = (unsigned long)io_map_base;
 	}
-- 
2.23.0