linux-kernel - [PATCH] mfd: sm501: Fix leaks in probe()

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Message-ID: <20200911113326.GB367487@mwanda>
Date:   Fri, 11 Sep 2020 14:33:26 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     Ben Dooks <ben@...ff.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vincent Sanders <vince@....linux.org.uk>,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH] mfd: sm501: Fix leaks in probe()

This code should clean up if sm501_init_dev() fails.

Fixes: b6d6454fdb66 ("[PATCH] mfd: SM501 core driver")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 drivers/mfd/sm501.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
index ccd62b963952..6d2f4a0a901d 100644
--- a/drivers/mfd/sm501.c
+++ b/drivers/mfd/sm501.c
@@ -1415,8 +1415,14 @@ static int sm501_plat_probe(struct platform_device *dev)
 		goto err_claim;
 	}
 
-	return sm501_init_dev(sm);
+	ret = sm501_init_dev(sm);
+	if (ret)
+		goto err_unmap;
+
+	return 0;
 
+ err_unmap:
+	iounmap(sm->regs);
  err_claim:
 	release_mem_region(sm->io_res->start, 0x100);
  err_res:
-- 
2.28.0