[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20150410131710.079974176@linuxfoundation.org>
Date: Fri, 10 Apr 2015 15:19:12 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
David Dueck <davidcdueck@...glemail.com>,
Felipe Balbi <balbi@...com>
Subject: [PATCH 3.19 46/75] usb: phy: am335x-control: check return value of bus_find_device
3.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Dueck <davidcdueck@...glemail.com>
commit d0f347d62814ec0f599a05c61c5619d5e999e4ae upstream.
This fixes a potential null pointer dereference.
Fixes: d4332013919a ("driver core: dev_get_drvdata: Don't check for NULL dev")
Acked-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Signed-off-by: David Dueck <davidcdueck@...glemail.com>
Signed-off-by: Felipe Balbi <balbi@...com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/usb/phy/phy-am335x-control.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/usb/phy/phy-am335x-control.c
+++ b/drivers/usb/phy/phy-am335x-control.c
@@ -126,6 +126,9 @@ struct phy_control *am335x_get_phy_contr
return NULL;
dev = bus_find_device(&platform_bus_type, NULL, node, match);
+ if (!dev)
+ return NULL;
+
ctrl_usb = dev_get_drvdata(dev);
if (!ctrl_usb)
return NULL;
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists