From: LABBE Corentin Date: Thu, 12 Nov 2015 07:43:33 +0000 (+0100) Subject: usb: chipidea: usbmisc_imx: fix a possible NULL dereference X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=090bc267ea1013bbb33778b343b4acd78b9c5d9b;p=linux-beck.git usb: chipidea: usbmisc_imx: fix a possible NULL dereference of_match_device could return NULL, and so cause a NULL pointer dereference later. Renaming tmp_dev to of_id (like all others do) in the process. Reported-by: coverity (CID 1324135) Signed-off-by: LABBE Corentin Signed-off-by: Peter Chen --- diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index fcea4eb36eee..ab8b027e8cc8 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -500,7 +500,11 @@ static int usbmisc_imx_probe(struct platform_device *pdev) { struct resource *res; struct imx_usbmisc *data; - struct of_device_id *tmp_dev; + const struct of_device_id *of_id; + + of_id = of_match_device(usbmisc_imx_dt_ids, &pdev->dev); + if (!of_id) + return -ENODEV; data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) @@ -513,9 +517,7 @@ static int usbmisc_imx_probe(struct platform_device *pdev) if (IS_ERR(data->base)) return PTR_ERR(data->base); - tmp_dev = (struct of_device_id *) - of_match_device(usbmisc_imx_dt_ids, &pdev->dev); - data->ops = (const struct usbmisc_ops *)tmp_dev->data; + data->ops = (const struct usbmisc_ops *)of_id->data; platform_set_drvdata(pdev, data); return 0;