linux-kernel - [PATCH 4.4 029/159] mips: txx9: fix iounmap related issue

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Message-Id: <20191122100726.203902702@linuxfoundation.org>
Date:   Fri, 22 Nov 2019 11:27:00 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Ding Xiang <dingxiang@...s.chinamobile.com>,
        Atsushi Nemoto <anemo@....ocn.ne.jp>,
        Paul Burton <paul.burton@...s.com>, ralf@...ux-mips.org,
        jhogan@...nel.org, linux-mips@...ux-mips.org,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.4 029/159] mips: txx9: fix iounmap related issue

From: Ding Xiang <dingxiang@...s.chinamobile.com>

[ Upstream commit c6e1241a82e6e74d1ae5cc34581dab2ffd6022d0 ]

if device_register return error, iounmap should be called, also iounmap
need to call before put_device.

Signed-off-by: Ding Xiang <dingxiang@...s.chinamobile.com>
Reviewed-by: Atsushi Nemoto <anemo@....ocn.ne.jp>
Signed-off-by: Paul Burton <paul.burton@...s.com>
Patchwork: https://patchwork.linux-mips.org/patch/20476/
Cc: ralf@...ux-mips.org
Cc: jhogan@...nel.org
Cc: linux-mips@...ux-mips.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/mips/txx9/generic/setup.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index 9d9962ab7d25c..7dc97e944d5aa 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -961,12 +961,11 @@ void __init txx9_sramc_init(struct resource *r)
 		goto exit_put;
 	err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
 	if (err) {
-		device_unregister(&dev->dev);
 		iounmap(dev->base);
-		kfree(dev);
+		device_unregister(&dev->dev);
 	}
 	return;
 exit_put:
+	iounmap(dev->base);
 	put_device(&dev->dev);
-	return;
 }
-- 
2.20.1