linux-kernel - [PATCH] mips: txx9: fix iounmap related issue

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Message-Id: <1536207559-31543-1-git-send-email-dingxiang@cmss.chinamobile.com>
Date:   Thu,  6 Sep 2018 12:19:19 +0800
From:   Ding Xiang <dingxiang@...s.chinamobile.com>
To:     ralf@...ux-mips.org, paul.burton@...s.com, jhogan@...nel.org,
        linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org
Cc:     dingxiang@...s.chinamobile.com
Subject: [PATCH] mips: txx9: fix iounmap related issue

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>
---
 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 f6d9182..70a1ab6 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -960,12 +960,11 @@ 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;
 }
-- 
1.9.1