linux-kernel - [PATCH 3.16 212/306] staging: nvec: remove managed resource from PS2 driver

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Message-ID: <lsq.1487198500.294840739@decadent.org.uk>
Date:   Wed, 15 Feb 2017 22:41:40 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        "Marc Dietrich" <marvin24@....de>
Subject: [PATCH 3.16 212/306] staging: nvec: remove managed resource from
 PS2 driver

3.16.40-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Marc Dietrich <marvin24@....de>

commit 68fae2f3df455f53d0dfe33483a49020b3b758f3 upstream.

This basicly reverts commit e534f3e9 (staging:nvec: Introduce the use of
the managed version of kzalloc). Serio struct should never by managed
because it is refcounted. Doing so will lead to a double free oops on module
remove.

Signed-off-by: Marc Dietrich <marvin24@....de>
Fixes: e534f3e9429f ("staging:nvec: Introduce the use of the managed version of kzalloc")
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/staging/nvec/nvec_ps2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/nvec/nvec_ps2.c
+++ b/drivers/staging/nvec/nvec_ps2.c
@@ -105,7 +105,7 @@ static int nvec_mouse_probe(struct platf
 	struct nvec_chip *nvec = dev_get_drvdata(pdev->dev.parent);
 	struct serio *ser_dev;
 
-	ser_dev = devm_kzalloc(&pdev->dev, sizeof(struct serio), GFP_KERNEL);
+	ser_dev = kzalloc(sizeof(struct serio), GFP_KERNEL);
 	if (ser_dev == NULL)
 		return -ENOMEM;