From: Shailendra Verma <shailendra.v@samsung.com>
To: Mathias Nyman <mathias.nyman@intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Stephen Warren <swarren@wwwdotorg.org>,
Thierry Reding <thierry.reding@gmail.com>,
Alexandre Courbot <gnurou@gmail.com>,
linux-usb@vger.kernel.org, linux-tegra@vger.kernel.org,
linux-kernel@vger.kernel.org, p.shailesh@samsung.com,
ashish.kalra@samsung.com,
Shailendra Verma <shailendra.v@samsung.com>,
Shailendra Verma <shailendra.capricorn@gmail.com>
Subject: [PATCH] Usb: host - Fix possible NULL derefrence.
Date: Mon, 30 Jan 2017 10:36:29 +0530 [thread overview]
Message-ID: <1485752789-30374-1-git-send-email-shailendra.v@samsung.com> (raw)
In-Reply-To: CGME20170130050640epcas2p1f856bc12df5d1ee6b9e0c66cf9dd6339@epcas2p1.samsung.com
of_device_get_match_data could return NULL, and so can cause
a NULL pointer dereference later.
Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
---
drivers/usb/host/xhci-tegra.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c
index a59fafb..890c778 100644
--- a/drivers/usb/host/xhci-tegra.c
+++ b/drivers/usb/host/xhci-tegra.c
@@ -903,6 +903,10 @@ static int tegra_xusb_probe(struct platform_device *pdev)
return -ENOMEM;
tegra->soc = of_device_get_match_data(&pdev->dev);
+ if (!tegra->soc) {
+ dev_err(&pdev->dev, "no device match found\n");
+ return -ENODEV;
+ }
mutex_init(&tegra->lock);
tegra->dev = &pdev->dev;
--
1.7.9.5
next parent reply other threads:[~2017-01-30 5:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20170130050640epcas2p1f856bc12df5d1ee6b9e0c66cf9dd6339@epcas2p1.samsung.com>
2017-01-30 5:06 ` Shailendra Verma [this message]
2017-01-30 6:45 ` [PATCH] Usb: host - Fix possible NULL derefrence Greg Kroah-Hartman
2017-01-30 7:03 ` Thierry Reding
2017-01-30 19:37 ` Greg Kroah-Hartman
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