linux-kernel - [ 52/64] thermal: return an error on failure to register thermal class

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Message-Id: <20130410224345.504941844@linuxfoundation.org>
Date:	Wed, 10 Apr 2013 15:46:49 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Richard Guy Briggs <rbriggs@...hat.com>,
	Zhang Rui <rui.zhang@...el.com>,
	Jonghwan Choi <jhbird.choi@...sung.com>
Subject: [ 52/64] thermal: return an error on failure to register thermal class

3.8-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Richard Guy Briggs <rbriggs@...hat.com>

commit da28d966f6aa942ae836d09729f76a1647932309 upstream.

The return code from the registration of the thermal class is used to
unallocate resources, but this failure isn't passed back to the caller of
thermal_init.  Return this failure back to the caller.

This bug was introduced in changeset 4cb18728 which overwrote the return code
when the variable was re-used to catch the return code of the registration of
the genetlink thermal socket family.

Signed-off-by: Richard Guy Briggs <rbriggs@...hat.com>
Signed-off-by: Zhang Rui <rui.zhang@...el.com>
Cc: Jonghwan Choi <jhbird.choi@...sung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/thermal/thermal_sys.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -1807,6 +1807,7 @@ static int __init thermal_init(void)
 		idr_destroy(&thermal_cdev_idr);
 		mutex_destroy(&thermal_idr_lock);
 		mutex_destroy(&thermal_list_lock);
+		return result;
 	}
 	result = genetlink_init();
 	return result;


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