linux-kernel - [PATCH 3.13.y-ckt 040/103] usb: musb: stuff leak of struct usb

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Message-Id: <1424305990-17983-41-git-send-email-kamal@canonical.com>
Date:	Wed, 18 Feb 2015 16:32:07 -0800
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Daniel Mack <zonque@...il.com>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Felipe Balbi <balbi@...com>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.13.y-ckt 040/103] usb: musb: stuff leak of struct usb_hcd

3.13.11-ckt16 -stable review patch.  If anyone has any objections, please let me know.

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

From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

commit 68693b8ea4e284c46bff919ac62bd9ccdfdbb6ba upstream.

since the split of host+gadget mode in commit 74c2e9360058 ("usb: musb:
factor out hcd initalization") we leak the usb_hcd struct. We call now
musb_host_cleanup() which does basically usb_remove_hcd() and also sets
the hcd variable to NULL. Doing so makes the finall call to
musb_host_free() basically a nop and the usb_hcd remains around for ever
without anowner.
This patch drops that NULL assignment for that reason.

Fixes: 74c2e9360058 ("usb: musb: factor out hcd initalization")
Cc: Daniel Mack <zonque@...il.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Signed-off-by: Felipe Balbi <balbi@...com>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/usb/musb/musb_host.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 6582a20..df6ec9d 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -2631,7 +2631,6 @@ void musb_host_cleanup(struct musb *musb)
 	if (musb->port_mode == MUSB_PORT_MODE_GADGET)
 		return;
 	usb_remove_hcd(musb->hcd);
-	musb->hcd = NULL;
 }
 
 void musb_host_free(struct musb *musb)
-- 
1.9.1

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