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usb: chipidea: imx: fix a possible NULL dereference

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of_match_device could return NULL, and so cause a NULL pointer
dereference later.

Reported-by: coverity (CID 1324138)
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
This commit is contained in:
LABBE Corentin 2015-11-12 08:43:34 +01:00 committed by Peter Chen
parent 090bc267ea
commit 6f51bc340d
1 changed files with 8 additions and 3 deletions
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11
drivers/usb/chipidea/ci_hdrc_imx.c
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@ -247,9 +247,14 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
.flags = CI_HDRC_SET_NON_ZERO_TTHA,
};
int ret;
const struct of_device_id *of_id =
of_match_device(ci_hdrc_imx_dt_ids, &pdev->dev);
const struct ci_hdrc_imx_platform_flag *imx_platform_flag = of_id->data;
const struct of_device_id *of_id;
const struct ci_hdrc_imx_platform_flag *imx_platform_flag;
of_id = of_match_device(ci_hdrc_imx_dt_ids, &pdev->dev);
if (!of_id)
return -ENODEV;
imx_platform_flag = of_id->data;
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data)