linux-kernel - [PATCH] mfd: core: fix device reference leak in mfd_clone

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Message-Id: <1477996698-28870-1-git-send-email-johan@kernel.org>
Date:   Tue,  1 Nov 2016 11:38:18 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     linux-kernel@...r.kernel.org, Johan Hovold <johan@...nel.org>
Subject: [PATCH] mfd: core: fix device reference leak in mfd_clone_cell

Make sure to drop the reference taken by bus_find_device_by_name()
before returning from mfd_clone_cell().

Fixes: a9bbba996302 ("mfd: add platform_device sharing support for mfd")
Signed-off-by: Johan Hovold <johan@...nel.org>
---
 drivers/mfd/mfd-core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
index 3ac486a597f3..c57e407020f1 100644
--- a/drivers/mfd/mfd-core.c
+++ b/drivers/mfd/mfd-core.c
@@ -399,6 +399,8 @@ int mfd_clone_cell(const char *cell, const char **clones, size_t n_clones)
 					clones[i]);
 	}
 
+	put_device(dev);
+
 	return 0;
 }
 EXPORT_SYMBOL(mfd_clone_cell);
-- 
2.7.3